Approximate Dates When Birds Begin to Nest 
May: Third week. 
i Fourth ‘‘ 
“e “e ce 
Some time during May. 
507 Baltimore Oriole 
517 Purple Finch 
540 Vesper Sparrow 
549 Sharp-tailed Sparrow 
550 Seaside Sparrow 
595 Rose-breasted Grosbeak 
612 Cliff Swallow 
624 Red-eyed Vireo 
627 Warbling Vireo 
631 White-eyed Vireo 
636 Black-and-white Warbler 
639 Bachman’s Warbler 
659 Chestnut-sided Warbler 
681 Maryland Yellow-throat 
687 American Redstart 
722 Winter Wren 
724 Short-billed Marsh Wren 
725 Long-billed Marsh Wren 
756 Wilson’s Thrush 
428 Ruby-throated Hummingbird 
444 Kingbird 
459 Olive-sided Flycatcher 
598 Indigo Bunting. 
608 Scarlet Tanager 
641 Blue-winged Warbler 
648 Parula 
655 Myrtle Warbler 
662 Blackburnian Warbler 
677 Kentucky Warbler 
684 Hooded Warbler 
7596 Hermit Thrush 
298 Canada Grouse 
445 Gray Kingbird 
567e Carolina Junco 
575 Pine-woods Sparrow 
597. Blue Grosbeak 
604 Dickcissel 
622 Loggerhead Shrike 
637 Prothonotary Warbler 
751 Blue-gray Gnatcatcher 
32 
