UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act File number 811-7456 Name of Fund: BlackRock Senior High Income Fund, Inc. Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Robert C. Doll, Jr., Chief Executive Officer, BlackRock Senior High Income Fund, Inc., 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011 Registrant's telephone number, including area code: (609) 282-2800 Date of fiscal year end: 02/28/2008 Date of reporting period: 03/01/07 - 05/31/07 Item 1 - Schedule of Investments BlackRock Senior High Income Fund, Inc. Schedule of Investments as of May 31, 2007 (unaudited) (in U.S. dollars) Face Industry Amount Corporate Bonds Value Aerospace & Defense - 1.6% $ 5,510,000 Vought Aircraft Industries, Inc., 8% due 7/15/2011 $ 5,654,637 Automotive - 4.1% 680,000 Ford Motor Credit Co., 5.80% due 1/12/2009 669,748 2,240,000 Ford Motor Credit Co., 8.11% due 1/13/2012 (c) 2,250,918 250,000 Ford Motor Credit Co., 9.81% due 4/15/2012 (c) 270,008 5,070,000 The Goodyear Tire & Rubber Co., 9.14% due 12/01/2009 (c)(k) 5,082,675 910,000 The Goodyear Tire & Rubber Co., 8.625% due 12/01/2011 (k) 982,800 2,220,000 Lear Corp., 8.75% due 12/01/2016 2,131,200 1,075,000 Metaldyne Corp., 11% due 6/15/2012 1,104,560 770,000 Titan International, Inc., 8% due 1/15/2012 793,100 915,000 United Auto Group, Inc., 7.75% due 12/15/2016 (k) 924,150 700,000 Venture Holdings Co. LLC, 12% due 6/01/2009 (f) 0 3,325,000 Venture Holdings Co. LLC Series B, 9.50% due 7/01/2005 (m) 13,300 --------------- 14,222,459 Broadcasting - 0.5% 500,000 LIN Television Corp. Series B, 6.50% due 5/15/2013 505,000 1,325,000 Paxson Communications Corp., 8.606% due 1/15/2012 (c)(k) 1,353,154 --------------- 1,858,154 Cable - International - 0.1% 350,000 NTL Cable Plc, 8.75% due 4/15/2014 370,125 Cable - U.S. - 7.0% 3,175,000 Cablevision Systems Corp. Series B, 9.82% due 4/01/2009 (c) 3,361,531 1,750,000 Charter Communications Holdings LLC, 10% due 4/01/2009 1,798,125 1,319,000 Charter Communications Holdings LLC, 11.125% due 1/15/2011 1,345,380 660,000 Charter Communications Holdings LLC, 10% due 5/15/2011 669,900 275,000 Intelsat Bermuda Ltd., 11.409% due 6/15/2013 (c) 293,906 1,280,000 Intelsat Bermuda Ltd., 8.872% due 1/15/2015 (c) 1,308,800 3,410,000 Intelsat Corp., 9% due 6/15/2016 3,733,950 1,675,000 Intelsat Subsidiary Holding Co. Ltd., 8.25% due 1/15/2013 1,739,906 2,400,000 Intelsat Subsidiary Holding Co. Ltd., 8.625% due 1/15/2015 2,571,000 1,875,000 Mediacom LLC, 9.50% due 1/15/2013 1,935,938 5,250,000 Rainbow National Services LLC, 8.75% due 9/01/2012 (k) 5,604,375 --------------- 24,362,811 Chemicals - 4.8% 610,000 American Pacific Corp., 9% due 2/01/2015 (k) 615,338 1,350,000 ArCo Chemical Co., 9.80% due 2/01/2020 1,498,500 2,250,000 Compass Minerals International, Inc. Series B, 12% due 6/01/2013 (i) 2,227,500 4,382,000 GEO Specialty Chemicals, Inc., 13.85% due 12/31/2009 (a) 3,615,150 1,500,000 Hexion U.S. Finance Corp., 9.86% due 11/15/2014 (c)(k) 1,567,500 1,170,000 Ineos Group Holdings Plc, 8.50% due 2/15/2016 (k) 1,177,310 430,000 Momentive Performance Materials, Inc., 10.125% due 12/01/2014 (h)(k) 449,350 4,690,000 NOVA Chemicals Corp., 8.484% due 11/15/2013 (c) 4,760,350 1,000,000 PolyOne Corp., 6.89% due 9/22/2008 980,000 --------------- 16,890,998 Consumer - Durables - 0.1% 250,000 Simmons Bedding Co., 7.875% due 1/15/2014 255,000 Consumer - Non-Durables - 2.6% 4,725,000 Hines Nurseries, Inc., 10.25% due 10/01/2011 3,780,000 2,125,000 North Atlantic Trading Co., 9.25% due 3/01/2012 1,827,500 3,525,000 Quiksilver, Inc., 6.875% due 4/15/2015 3,432,469 --------------- 9,039,969 Diversified Media - 2.0% 120,000 Affinion Group, Inc., 10.125% due 10/15/2015 131,400 395,000 Affinion Group, Inc., 11.50% due 10/15/2015 441,413 1,960,000 Idearc, Inc., 8% due 11/15/2016 2,031,050 245,000 Network Communications, Inc., 10.75% due 12/01/2013 260,005 1,350,000 Nielsen Finance LLC, 10% due 8/01/2014 (k) 1,471,500 2,450,000 Universal City Florida Holding Co. I, 10.106% due 5/01/2010 (c) 2,529,625 --------------- 6,864,993 Energy - Exploration & 200,000 Berry Petroleum Co., 8.25% due 11/01/2016 204,500 Production - 2.0% 1,500,000 Chaparral Energy, Inc., 8.50% due 12/01/2015 1,503,750 1,580,000 Compton Petroleum Finance Corp., 7.625% due 12/01/2013 1,595,800 2,985,000 Sabine Pass LNG LP, 7.50% due 11/30/2016 (k) 3,059,625 540,000 Stone Energy Corp., 8.106% due 7/15/2010 (c)(k) 540,000 --------------- 6,903,675 Energy - Other - 2.7% 1,295,000 Aleris International, Inc., 9% due 12/15/2014 (h)(k) 1,334,112 5,000,000 Ocean RIG ASA, 9.35% due 4/04/2011 (c) 4,987,500 3,025,000 SemGroup LP, 8.75% due 11/15/2015 (k) 3,164,906 --------------- 9,486,518 Financial - 2.4% 3,000,000 American Real Estate Partners LP, 7.125% due 2/15/2013 (k) 2,947,500 4,000,000 Highland Legacy Ltd., 11.621% due 6/01/2011 (c)(k) 4,006,000 500,000 Investcorp SA, 7.54% due 10/21/2008 505,991 1,000,000 Pennant CBO Ltd., 13.43% due 3/14/2011 (k) 920,000 --------------- 8,379,491 Gaming - 3.3% 4,475,000 CCM Merger, Inc., 8% due 8/01/2013 (k) 4,575,688 550,000 Galaxy Entertainment Finance Co. Ltd., 9.875% due 12/15/2012 (k) 598,125 1,210,000 Little Traverse Bay Bands of Odawa Indians, 10.25% due 2/15/2014 (k) 1,258,400 300,000 Penn National Gaming, Inc., 6.75% due 3/01/2015 304,500 500,000 Snoqualmie Entertainment Authority, 9.15% due 2/01/2014 (c)(k) 511,250 1,000,000 Station Casinos, Inc., 7.75% due 8/15/2016 1,032,500 1,650,000 Tropicana Entertainment, LLC, 9.625% due 12/15/2014 (k) 1,666,500 1,500,000 Tunica-Biloxi Gaming Authority, 9% due 11/15/2015 (k) 1,595,625 --------------- 11,542,588 Health Care - 4.0% 2,690,000 Angiotech Pharmaceuticals, Inc., 9.11% due 12/01/2013 (c) 2,797,600 1,875,000 CDRV Investors, Inc., 9.75% due 1/01/2015 (i) 1,703,906 1,000,000 The Cooper Cos., Inc., 7.125% due 2/15/2015 (k) 1,020,000 1,650,000 Elan Finance Plc, 7.75% due 11/15/2011 1,680,935 2,325,000 Elan Finance Plc, 9.36% due 11/15/2011 (c) 2,371,500 3,000,000 Tenet Healthcare Corp., 7.375% due 2/01/2013 2,827,500 500,000 Universal Hospital Services, Inc., 8.50% due 6/01/2015 (h)(k) 510,510 460,000 Universal Hospital Services, Inc., 8.759% due 6/01/2015 (c)(k) 466,900 700,000 VWR International, Inc., 8% due 4/15/2014 753,375 --------------- 14,132,226 Housing - 5.1% 1,500,000 CPG International I, Inc., 10.50% due 7/01/2013 1,590,000 1,540,000 Esco Corp., 9.235% due 12/15/2013 (c)(k) 1,601,600 1,831,000 Goodman Global Holding Co., Inc., 8.36% due 6/15/2012 (c) 1,851,599 4,750,000 Goodman Global Holding Co., Inc., 7.875% due 12/15/2012 4,833,125 2,050,000 Masonite Corp., 11% due 4/06/2015 (k) 1,937,250 6,000,000 Realogy Corp., 11% due 4/15/2014 (h)(k) 5,970,000 --------------- 17,783,574 Information Technology - 2.0% 280,000 Compagnie Generale de Geophysique-Veritas, 7.75% due 5/15/2017 295,400 3,710,000 Freescale Semiconductor, Inc., 9.125% due 12/15/2014 (h)(k) 3,672,900 430,000 Freescale Semiconductor, Inc., 9.23% due 12/15/2014 (c)(k) 430,538 240,000 Nortel Networks Ltd., 9.606% due 7/15/2011 (c)(k) 258,600 175,000 Sanmina-SCI Corp., 8.125% due 3/01/2016 170,188 2,180,000 Spansion, Inc., 8.485% due 6/01/2013 (c)(k) 2,207,250 --------------- 7,034,876 Leisure - 0.4% 1,750,000 True Temper Sports, Inc., 8.375% due 9/15/2011 1,570,625 Manufacturing - 3.3% 3,000,000 Communications & Power Industries, Inc., 8% due 2/01/2012 3,060,000 1,838,000 Invensys Plc, 9.875% due 3/15/2011 (k) 1,975,850 1,320,000 Jarden Corp., 7.50% due 5/01/2017 1,346,400 2,490,000 NXP BV, 8.106% due 10/15/2013 2,564,700 950,000 NXP BV, 9.50% due 10/15/2015 983,250 740,000 RBS Global, Inc., 9.50% due 8/01/2014 795,500 835,000 RBS Global, Inc., 8.875% due 9/01/2016 870,488 --------------- 11,596,188 Metal - Other - 4.8% 5,430,000 Freeport-McMoRan Copper & Gold, Inc., 8.564% due 4/01/2015 (c) 5,721,863 3,700,000 Indalex Holding Corp. Series B, 11.50% due 2/01/2014 3,926,625 4,530,000 Peabody Energy Corp., 7.375% due 11/01/2016 4,796,138 2,225,000 RathGibson, Inc., 11.25% due 2/15/2014 2,358,500 --------------- 16,803,126 Packaging - 1.8% 100,000 Berry Plastics Holding Corp., 9.235% due 9/15/2014 (c) 102,375 4,285,000 Packaging Dynamics Finance Corp., 10% due 5/01/2016 (k) 4,327,850 2,000,000 Wise Metals Group LLC, 10.25% due 5/15/2012 1,900,000 --------------- 6,330,225 Paper - 10.2% 3,275,000 Abitibi-Consolidated, Inc., 8.86% due 6/15/2011 (c) 3,086,688 4,975,000 Ainsworth Lumber Co. Ltd., 9.11% due 10/01/2010 (c) 4,079,500 2,500,000 Ainsworth Lumber Co. Ltd., 9.364% due 4/01/2013 (c) 1,925,000 1,100,000 Boise Cascade LLC, 8.235% due 10/15/2012 (c) 1,100,000 350,000 Boise Cascade LLC, 7.125% due 10/15/2014 350,000 7,475,000 Bowater, Inc., 8.36% due 3/15/2010 (c) 7,484,344 1,775,000 Domtar, Inc., 7.125% due 8/15/2015 1,786,094 215,000 Graphic Packaging International Corp., 9.50% due 8/15/2013 228,706 5,175,000 NewPage Corp., 11.606% due 5/01/2012 (c) 5,750,719 5,150,000 Smurfit Kappa Funding Plc, 7.75% due 4/01/2015 5,291,625 800,000 Smurfit-Stone Container Enterprises, Inc., 8.375% due 7/01/2012 816,000 1,300,000 Smurfit-Stone Container Enterprises, Inc., 8% due 3/15/2017 (k) 1,309,750 2,300,000 Verso Paper Holdings LLC, 9.11% due 8/01/2014 (c)(k) 2,369,000 250,000 Verso Paper Holdings LLC, 11.375% due 8/01/2016 (k) 267,500 --------------- 35,844,926 Retail - 0.6% 1,780,000 Michaels Stores, Inc., 10% due 11/01/2014 (k) 1,922,400 Service - 1.6% 2,700,000 Ahern Rentals, Inc., 9.25% due 8/15/2013 2,794,500 2,000,000 Neff Rental LLC, 11.25% due 6/15/2012 2,320,000 550,000 PNA Intermediate Holding Corp., 12.36% due 2/15/2013 (c)(k) 561,000 --------------- 5,675,500 Telecommunications - 2.5% 1,200,000 Nordic Telephone Co. Holdings ApS, 8.875% due 5/01/2016 (k) 1,300,500 4,000,000 Qwest Communications International, Inc., 8.86% due 2/15/2009 (c) 4,050,000 1,025,000 Qwest Corp., 8.61% due 6/15/2013 (c) 1,122,375 2,000,000 Time Warner Telecom Holdings, Inc., 9.25% due 2/15/2014 2,147,500 --------------- 8,620,375 Transportation - 1.4% 1,000,000 Atlantic Express Transportation Corp., 12.609% due 4/15/2012 (c)(k) 997,500 1,000,000 Navios Maritime Holdings, Inc., 9.50% due 12/15/2014 (k) 1,061,250 3,030,000 St. Acquisition Corp., 13.107% due 5/15/2015 (c)(k) 2,939,100 --------------- 4,997,850 Utility - 1.5% 1,525,000 El Paso Performance-Linked Trust, 7.75% due 7/15/2011 (k) 1,612,688 2,620,000 NSG Holdings LLC, 7.75% due 12/15/2025 (k) 2,757,550 725,000 Williams Cos., Inc., 8.625% due 6/01/2010 756,719 --------------- 5,126,957 Wireless Communications - 0.8% 630,000 iPCS, Inc., 7.48% due 5/01/2013 (c)(k) 631,575 310,000 Orascom Telecom Finance SCA, 7.875% due 2/08/2014 305,226 395,000 Orascom Telecom Finance SCA, 7.875% due 2/08/2014 (k) 386,606 1,500,000 Rural Cellular Corp., 8.25% due 3/15/2012 1,578,750 --------------- 2,902,157 Total Corporate Bonds (Cost - $256,679,270) - 73.2% 256,172,423 Floating Rate Loan Interests (b) Aerospace & Defense - 1.9% 78,014 Hawker Beechcraft Letter of Credit, 5.25% due 3/31/2014 78,376 921,986 Hawker Beechcraft Term Loan B, 7.32% due 3/31/2014 926,268 999,369 IAP Worldwide Services, Inc. Term Loan, 9.688% due 12/31/2012 1,002,180 498,750 MRO Acquisitions Corp. First Lien Term Loan, 7.82% due 9/15/2010 500,309 4,328,704 Standard Aero Holdings Term Loan, 7.59% due 8/24/2012 4,328,704 --------------- 6,835,837 Airlines - 0.4% 1,250,000 Delta Airlines First Lien Term Loan, 7.355% due 5/15/2012 1,254,375 Automotive - 5.1% 2,000,000 ADESA, Inc. Term Loan B, 7.57% due 10/30/2013 2,012,752 1,000,000 Goodyear Tire & Rubber Co., First Lien Term Loan, 7.10% due 4/30/2014 1,003,929 447,127 Intermet Corp. First Lien Term Loan, 10.353% due 11/08/2010 378,568 648,148 Intermet Corp., Letter of Credit, 10.20% due 11/08/2010 548,766 1,496,250 Keystone Automotive Operations, Inc. Term Loan B, 8.75% due 1/15/2012 1,451,363 57,692 Metaldyne Corp., Letter of Credit, 8.92% - 9.10% due 1/15/2012 58,149 392,308 Metaldyne Corp., Term Loan B, 9.10% due 1/15/2014 395,414 1,066,667 Navistar International Transportation Corp., Revolving Credit, 5.22% - 8.61% due 6/30/2012 1,080,889 2,933,333 Navistar International Transportation Corp. Term Loan, 8.61% due 6/30/2012 2,972,443 1,995,000 Oshkosh Truck Corp. Term Loan B, 7.35% due 11/30/2013 2,002,481 987,453 United Components, Inc. Term Loan D, 7.61% due 6/30/2012 992,391 4,750,000 Visteon Corp. Term Loan B, 8.35% - 8.38% due 6/13/2013 4,779,198 --------------- 17,676,343 Beverages - 0.9% 1,500,000 Culligan International Dollar Loan, 7.57% due 11/24/2012 1,500,000 1,500,000 Culligan International Term Loan B, 9.50% due 4/24/2012 1,507,500 --------------- 3,007,500 Broadcasting - 3.1% 3,000,000 Bresnan Telecommunications Term Loan B, 7.38% due 9/29/2013 3,010,314 4,000,000 Ellis Communications Term Loan, 10% due 12/30/2011 3,990,000 3,758,389 Univision Communications, Inc. Delay Draw Term Loan, 7.605% due 9/30/2014 3,752,970 --------------- 10,753,284 Cable - U.S. - 7.2% 4,400,037 Cebridge Connections Second Lien Term Loan, 11.356% - 11.36% due 5/04/2014 4,538,916 3,155,173 Cebridge Connections Term Loan B, 7.34% - 7.35% due 11/05/2013 3,156,946 8,000,000 Charter Communications, Inc. Term Loan B, 7.32% due 4/30/2014 7,999,504 5,000,000 Insight Midwest Holdings LLC Delay Draw Term Loan, 7.35% due 4/03/2014 5,031,640 1,992,653 Mediacom Communications Term Loan D, 7.10% - 7.11% due 1/31/2015 1,992,343 2,561,081 Mediacom LLC Term Loan C, 7.09% - 7.11% due 1/31/2015 2,564,283 --------------- 25,283,632 Chemicals - 3.9% 2,652,750 CII Carbon Term Loan B, 7.375% due 8/23/2012 2,659,382 1,194,012 Huntsman ICI Holdings Term Loan B, 7.07% due 8/16/2012 1,199,609 1,568,000 Rockwood Specialties Group, Inc. Tranche D Term Loan, 7.355% due 12/10/2012 1,579,760 8,000,000 Wellman, Inc. First Lien Term Loan, 9.356% due 2/10/2009 8,078,336 --------------- 13,517,087 Consumer - Non-Durables - 0.4% 1,451,250 Solo Cup Co. Term Loan, 8.84% - 8.85% due 2/27/2011 1,473,926 Diversified Media - 3.9% 2,000,000 Affinion Group Term Loan, 11.66% due 3/01/2012 2,000,000 605,797 GateHouse Media, Inc. Delay Draw Term Loan, 7.35% - 7.36% due 9/15/2014 605,040 1,500,000 GateHouse Media, Inc. Term Loan B, 7.36% due 9/15/2014 1,498,125 1,000,000 Hanley-Wood LLC Term Loan B, 7.59% - 7.61% due 3/07/2014 995,417 2,992,500 Idearc, Inc. Term Loan B, 7.35% due 11/15/2014 3,013,639 3,482,500 Nielsen Finance LLC Term Loan B, 7.607% due 8/15/2013 3,509,709 750,000 Penton Media Term Loan, 7.60% - 7.605% due 2/15/2013 753,047 479,022 Riverdeep Group Ltd. Bridge Loan, 11.55% due 12/21/2007 479,022 750,000 Riverdeep Group Ltd. Term Loan B, 8.10% due 12/21/2013 753,516 --------------- 13,607,515 Energy - Exploration & 450,000 Big West Oil & Gas Term Loan B, 9.50% due 5/15/2014 452,250 Production - 2.5% 6,000,000 Frontier Drilling Term Loan B, 8.60% due 6/21/2013 6,007,500 495,000 MEG Energy Corp. Term Loan B, 7.35% due 4/03/2013 498,480 1,000,000 Sandridge Energy Term Loan, 8.975% due 3/01/2014 1,030,000 803,571 Western Refining Co. LP Term Loan B, 7.07% due 3/15/2014 806,585 --------------- 8,794,815 Energy - Other - 2.9% 330,833 Alon USA, Inc., Delay Draw Term Loan, 7.57% due 6/22/2013 332,488 2,646,667 Alon USA, Inc., Term Loan B, 7.57% - 7.62% due 6/22/2013 2,659,900 1,500,000 Dresser, Inc. First Lien Term Loan, 7.82% due 5/15/2014 1,511,813 1,000,000 Dresser, Inc. Second Lien Term Loan, 11.07% due 5/15/2015 1,018,750 2,468,750 Key Energy Services, Inc. Term Loan B, 7.85% - 7.856% due 6/30/2012 2,481,094 2,000,000 Scorpion Drilling Ltd. Second Lien Term Loan, 13.61% due 5/05/2015 2,130,000 --------------- 10,134,045 Financial - 1.2% 1,000,000 J.G. Wentworth Manufacturing Second Lien Term Loan, 10.35% due 10/15/2014 1,014,375 3,000,000 J.G. Wentworth Manufacturing Term Loan B, 7.60% due 4/15/2014 3,003,750 --------------- 4,018,125 Food & Tobacco - 4.4% 329,207 Aramark Corp., Letter of Credit, 5.20% due 1/30/2014 331,377 4,606,443 Aramark Corp., Term Loan B, 7.35% due 1/30/2014 4,636,804 750,000 Bolthouse Farms, Inc. Second Lien Term Loan, 10.85% due 12/01/2013 758,750 558,777 Dole Food Co., Inc., Letter of Credit, 5.226% due 4/12/2013 558,738 1,244,675 Dole Food Co., Inc., Term Loan B, 7.438% - 9.25% due 4/12/2013 1,244,589 4,148,917 Dole Food Co., Inc., Term Loan C, 7.438% - 9.25% due 4/04/2013 4,148,630 970,560 Eight O'Clock Coffee Second Lien Term Loan, 8.125% due 7/21/2012 970,560 1,401,962 Pierre Foods, Inc. Term Loan B, 7.61% due 6/30/2010 1,406,344 992,500 QCE LLC First Lien Term Loan, 7.598% due 5/05/2013 997,214 250,000 Sturm Foods, Inc. First Lien Term Loan, 7.938% due 1/30/2014 250,938 --------------- 15,303,944 Gaming - 2.6% 1,300,000 Edge-Star Partners LLC First Lien Term Loan, 9.36% due 11/18/2007 1,300,000 200,000 Edge-Star Partners LLC First Lien Term Loan, 9.36% due 11/18/2007 200,000 748,125 Greenwood Racing, Inc. Term Loan, 7.57% due 11/15/2013 751,866 1,200,000 Las Vegas Sands Term Loan B, 7.07% due 5/04/2014 1,203,323 1,500,000 Venetian Macau US Finance Co. LLC Delay Draw Term Loan, 7.60% due 5/25/2012 1,505,859 4,000,000 Venetian Macau US Finance Co. LLC Term Loan B, 7.60% due 5/25/2013 4,033,180 --------------- 8,994,228 Health Care - 2.7% 497,500 Community Health Systems, Inc. Term Loan B, 7.10% due 12/15/2013 498,278 1,107,600 DaVita, Inc. Term Loan B, 6.82% - 6.86% due 7/30/2012 1,110,716 2,000,000 Health Management Associates, Inc. Term Loan B, 7.10% due 1/15/2014 2,008,056 3,000,000 Pharmaceutical Technologies & Services (PTS) Term Loan, 7.60% due 4/15/2014 3,007,032 497,500 Sterigenics International, Inc. Term Loan B, 7.86% due 11/30/2013 499,366 2,347,414 VWR International, Inc. Tranche B Term Loan, 7.61% due 4/07/2011 2,354,750 --------------- 9,478,198 Housing - 2.7% 1,476,563 Headwaters, Inc. Term Loan B-1, 7.36% due 4/30/2011 1,476,563 5,000,000 LNR Property Corp. Term Loan B, 8.11% due 7/12/2011 5,019,645 3,000,000 Realogy Corp. Letter of Credit, 8.35% due 9/22/2014 3,001,173 --------------- 9,497,381 Information Technology - 3.9% 1,638,380 Activant Solutions Term Loan B, 7.375% due 5/02/2013 1,634,284 500,000 Audio Visual Services Corp. Second Lien Term Loan, 10.85% due 9/15/2014 501,875 2,000,000 Audio Visual Services Corp. Term Loan B, 7.60% due 3/15/2014 2,010,000 973,460 ClientLogic Holding Corp. Term Loan B, 7.82% due 1/30/2014 978,328 464,286 Intergraph Corp. Term Loan, 7.61% due 5/15/2014 467,574 697,491 RedPrairie Corp. Term Loan, 8.375% - 10.25% due 7/31/2012 699,235 299,250 RedPrairie Corp. Term Loan, 8.375% due 1/31/2013 299,998 1,990,000 Reynolds and Reynolds Company First Lien Term Loan, 7.35% due 10/31/2012 2,002,081 3,000,000 Sanmina-SCI Corp. Term Loan, 8.375% due 1/30/2008 3,011,250 498,750 SunGard Data Systems, Inc. Term Loan B, 7.356% due 2/28/2014 502,407 1,653,750 Telcordia Technologies, Inc. Term Loan, 8.11% due 9/15/2012 1,635,145 --------------- 13,742,177 Leisure - 1.3% 2,977,500 Cedar Fair LP Term Loan B, 7.32% due 8/30/2012 3,007,090 1,500,000 National Cinemedia LLC Term Loan B, 7.09% due 2/28/2015 1,500,804 --------------- 4,507,894 Manufacturing - 3.2% 500,000 Brand Energy Letter of Credit, 7.625% due 2/15/2014 500,000 1,000,000 Harrington Holdings, Inc. Term Loan, 7.84% due 1/15/2014 1,005,000 1,000,000 Huish Detergents, Inc. First Lien Term Loan, 7.32% due 4/15/2014 1,001,563 1,529,412 Invensys PLC Bonding Tranche, 7.356% due 12/15/2010 1,533,873 1,720,588 Invensys PLC Term Loan, 7.347% due 1/15/2011 1,731,342 1,207,964 John Maneely Co. Term Loan B, 8.571% - 8.622% due 12/15/2013 1,205,133 3,348,427 Metokote Corp. Second Lien Term Loan, 8.32% - 8.36% due 11/27/2011 3,356,798 1,000,000 Mueller Water Products Term Loan B, 7.07% due 5/16/2014 1,007,500 --------------- 11,341,209 Metal - Other - 1.3% 3,000,000 Euramax International Plc Second Lien Term Loan, 13.35% due 6/29/2013 2,949,375 1,696,527 Euramax International Plc Tranche 3 Term Loan B, 8.375% due 6/29/2012 1,691,578 --------------- 4,640,953 Packaging - 1.3% 1,567,095 Anchor Glass Container Corp. Term Loan B, 7.60% - 7.61% due 5/03/2013 1,559,259 2,000,000 Graham Packaging Term Loan B, 7.625% due 4/15/2011 2,015,416 1,000,000 Graphic Packaging International Term Loan B, 8.75% due 8/08/2010 1,008,542 --------------- 4,583,217 Paper - 0.2% 27,586 Cenveo, Inc. Delay Draw Term Loan, 7.10% due 9/07/2013 27,621 827,586 Cenveo, Inc. Term Loan C, 7.10% due 9/07/2013 828,621 --------------- 856,242 Personal Products - 0.3% 1,000,000 KIK Corp First Lien Term Loan, 7.61% due 5/30/2014 1,005,000 Retail - 0.7% 500,000 Burlington Coat Factory Warehouse Corp. Term Loan B, 7.61% due 4/15/2013 498,646 1,500,000 Claire's Stores Term Loan B, 8.07% due 5/24/2014 1,492,970 498,750 PETCO Animal Supplies, Inc. Term Loan, 8.10% due 10/31/2012 502,847 --------------- 2,494,463 Service - 4.0% 807,272 Allied Waste North America, Inc., Term Loan, 7.06% - 7.15% due 1/15/2012 811,020 382,057 Allied Waste North America, Inc., Tranche A Credit Linked Deposit, 5.32% due 1/15/2012 384,074 800,000 Brickman Group, Inc. Term Loan, 7.34% - 7.399% due 1/30/2014 802,000 1,000,000 Brock Holdings Term Loan, 7.32% due 2/28/2014 1,003,750 750,000 Inmar, Inc. Term Loan B, 7.82% due 5/15/2013 754,688 1,725,712 NES Rentals Holdings, Inc. Term Loan C, 12.125% due 7/12/2013 1,736,498 732,336 United Rentals, Inc. Term Loan, 7.32% due 2/14/2011 735,279 333,333 United Rentals, Inc. Tranche B Credit Linked Deposit, 5.32% due 2/14/2011 334,673 7,530,327 Waste Services, Inc. Term Loan D, 7.82% due 3/31/2011 7,586,804 --------------- 14,148,786 Steel - 0.1% 498,750 McJunkin Corp. Term Loan B, 7.60% due 1/30/2014 501,867 Telecommunications - 1.0% 750,000 Knology, Inc. Term Loan B, 7.59% due 3/15/2012 752,344 1,702,542 Winstar Communications Debtor in Possession, 6.366% due 12/31/2006 (m) 2,568,000 --------------- 3,320,344 Transportation - 0.9% 3,000,000 Swift Transportation Co., Inc. Term Loan B, 8.375% due 5/15/2014 2,992,875 Utility - 0.2% 742,500 Generac Portable Products, Inc. First Lien Term Loan, 7.85% due 11/15/2013 734,810 Wireless Communications - 2.2% 1,000,000 American Cellular Network Term Loan B, 7.32% due 3/15/2014 1,005,500 2,750,000 Centennial Cellular Operating Co. Term Loan, 7.35% - 7.36% due 2/09/2011 2,768,906 2,000,000 Crown Castle Operating Co. Term Loan, 6.899% due 3/15/2014 2,003,592 1,995,000 West Corp. Term Loan, 7.763% - 8.11% due 10/31/2013 2,009,963 --------------- 7,787,961 Total Floating Rate Loan Interests (Cost - $228,826,298) - 66.4% 232,288,033 Shares Held Common Stocks Chemicals - 0.0% 142,466 GEO Specialty Chemicals, Inc. (e) 142,466 Leisure - 0.2% 41,866 Lodgian, Inc. (e) 635,945 Paper - 0.1% 18,171 Smurfit Kappa Plc (e) 464,555 Total Common Stocks (Cost - $2,818,960) - 0.3% 1,242,966 Warrants (l) Wireless Communications - 0.1% 600 American Tower Corp. (expires 8/01/2008) 365,346 Total Warrants (Cost - $39,036) - 0.1% 365,346 Beneficial Interest Other Interests (g) Automotive - 0.0% $ 4,130,972 Cambridge Industries, Inc. (Litigation Trust Certificates) 41 Cable - U.S. - 0.0% 2,500 Adelphia Preferred Escrow 0 250,000 Adelphia Recovery Trust Series ACC-6B INT 25 --------------- 25 Health Care - 0.0% 10,284 MEDIQ, Inc. (Preferred Stock Escrow due 2/01/2006) (g) 0 Total Other Interests (Cost - $25) - 0.0% 66 Short-Term Securities $ 3,114,350 BlackRock Liquidity Series, LLC Cash Sweep Series, 5.26% (d)(j) 3,114,350 Total Short-Term Securities (Cost - $3,114,350) - 0.9% 3,114,350 Total Investments (Cost - $491,477,939*) - 140.9% 493,183,184 Liabilities in Excess of Other Assets - (40.9%) (143,228,333) --------------- Net Assets - 100.0% $ 349,954,851 =============== * The cost and unrealized appreciation (depreciation) of investments as of May 31, 2007, as computed for federal income tax purposes, were as follows: Aggregate cost $ 491,204,049 =================== Gross unrealized appreciation $ 12,870,641 Gross unrealized depreciation (10,891,506) ------------------- Net unrealized appreciation $ 1,979,135 =================== (a) Convertible security. (b) Floating rate loan interests in which the Fund invests generally pays interest at rates that are periodically redetermined by reference to a base lending rate plus a premium. The base lending rates are generally (i) the lending rate offered by one or more major European banks, such as London InterBank Rate ("LIBOR"), (ii) the prime rate offered by one or more U.S. banks, or (iii) the certificate of deposit rate. (c) Floating rate security. (d) Investments in companies considered to be an affiliate of the Fund, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows: Net Interest Affiliate Activity Income BlackRock Liquidity Series, LLC Cash Sweep Series $ (1,736,275) $ 92,858 (e) Non-income producing security. (f) Non-income producing security; issuer filed for bankruptcy or is in default of interest payments. (g) Other interests represent beneficial interest in liquidation trusts and other reorganization entities and are non-income producing. (h) Represents a pay-in-kind security which may pay interest/dividends in additional face/shares. (i) Represents a step bond; the interest rate shown reflects the effective yield at the time of purchase. (j) Represents the current yield as of May 31, 2007. (k) The security may be offered and sold to "qualified institutional buyers" under Rule 144A of the Securities Act of 1933. (l) Warrants entitle the Fund to purchase a predetermined number of shares of common stock and are non-income producing. The purchase price and number of shares are subject to adjustment under certain conditions until the expiration date. (m) As a result of bankruptcy proceedings, the company did not repay the principal amount of the security upon maturity and is non-income producing. o For Fund compliance purposes, the Fund's industry classifications refer to any one or more of the industry sub-classifications used by one or more widely recognized market indexes or ratings group indexes, and/or as defined by Fund management. This definition may not apply for purposes of this report, which may combine industry sub-classifications for reporting ease. Industries are shown as a percent of net assets. o Swaps outstanding as of May 31, 2007 were as follows: Notional Unrealized Amount Appreciation Sold credit default protection on Ford Motor Credit Co. and receive 2.05% Broker, Deustche Bank AG London Expires March 2010 $ 5,000,000 $ 4,090 Item 2 - Controls and Procedures 2(a) - The registrant's certifying officers have reasonably designed such disclosure controls and procedures to ensure material information relating to the registrant is made known to us by others particularly during the period in which this report is being prepared. The registrant's certifying officers have determined that the registrant's disclosure controls and procedures are effective based on our evaluation of these controls and procedures as of a date within 90 days prior to the filing date of this report. 2(b) - There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17 CFR 270.30a-3(d)) that occurred during the last fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 3 - Exhibits Certifications - Attached hereto Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. BlackRock Senior High Income Fund, Inc. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr. Chief Executive Officer BlackRock Senior High Income Fund, Inc. Date: July 24, 2007 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr. Chief Executive Officer BlackRock Senior High Income Fund, Inc. Date: July 24, 2007 By: /s/ Donald C. Burke ------------------- Donald C. Burke Chief Financial Officer BlackRock Senior High Income Fund, Inc. Date: July 24, 2007