Among the migratory species which had already arrived by the 15th were the Large-billed Water Thrush (Siurus motacilla), numbers of which were heard singing in the swamp, the Black-and-white Creeper (Mniotilta varia borealis), Blue-gray Gnatcatcher (Polioptila cærulea), and a few others.
The nesting season began much later than usual, as the following list, of the earliest date on which the eggs of any species were obtained, will show.[[8]]
April 27. Yellow-crowned Night Heron (Nyctherodius violaceus).
April 30. Hairy Woodpecker (Picus villosus), two sets; Grass Finch (Poœcetes gramineus).
May 2. Field Sparrow (Spizella pusilla), Chewink (Pipilo erythrophthalmus).
May 9. Redbird (Cardinalis virginianus).
May 18. Red-eyed Vireo (Vireosylvia olivacea).
May 19. Prothonotary Warbler (Protonotaria citrea), Wood Thrush (Hylocichla mustelina).
May 20. Acadian Flycatcher (Empidonax acadicus).
May 22. Yellow-breasted Chat (Icteria virens), Maryland Yellow-throat (Geothlypis trichas), Indigo Bird (Passerina cyanea), Black-billed Cuckoo (Coccyzus erythrophthalmus).