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THE AUDUBON /BULD Ea 
Purple Martin (11) AOU 611 
Approximately half the eggs laid survived. 
Common Crow (2) AOU 488 
Four young, July 9, McHenry Co. 
Blue Jay (8) AOU 477 
Average—4 young fledged. Prolonged nesting, April 29-Sept 
ber 10. 
Tufted Tiimouse (4) AOU 731 
Two-three fledglings, Montgomery, Bureau, Christian Co. 
Black-Capped Chickadee (11) AOU 735 
First nest, April 27, Average 4-5 fledged, Bureau, Christian M 
gomery and Lake Co. 
White-Breasted Nuthatch (3) AOU 727 We : 
Fledged 1, 2 and 7 young, McHenry and Bureau Co. = 
House Wren (92) AOU 721 
Clutch size varied from 4-7 average 5.8. Earliest oe were the 1 
week of May, latest in mid-August. 
Carolina Wren (5) AOU 718 
Four young, April 24; most nests in late May- -June. 
Catbirds (5) AOU 704 
Broods of 3-4 young, McHenry, DuPage; Bureau, Christian Co. 
Brown Thrasher (12) AOU 705 
First nest, April 30; last nest June 17. Average brood - 3. 
Mockingbird (4) AOU 703 
First nest, April 27, St. Clair Co., 3-4 young per brood. 
Robin (77) AOU 761 
First nest, April 8, McHenry Co. Last nest, July 30, Bureau Co.; 
average Clutch 3. 
Bluebird (86) AOU 766 
Nesting, April 30, Bureau Co., to July 11, Montgomery” Co. Aver 
clutch 4. 
Wood Thrush (2) AOU 755 
Broods of 4, Crawford & Cook Co. 
Cedar Waxwing (1) AOU 619 
Four young, Sept. 2, Bureau Co. 
Starling (5) AOU 493 
Average of 1-2, fledged, Effingham, McHenry, DuPage, Christian 
counties P 
Yellow-throated Vireo (1) AOU 628 
One young, July 2, McHenry Co. 
Red-eyed Vireo (2) AOU 624 
Two nests, 1 with a young cowbird. McHenry Co. 
American Redstart (1) AOU 687 
One young, July 20, McHenry Co. 
Ovenbird (2) AOU 674 
Clutch size, 3, Cook and Winnebago Co. 
Hooded Warbler (1) AOU 684 
Nest being built, June 18, Cook Co. 
