Region: NY and NJ; western New York
Number of checklists submitted to ebird: 13
| Species Name | May 1-5 |
May 6-10 |
May 11-15 |
May 16-20 |
May 21-25 |
May 26-31 |
| Canada Goose | — | 4 | 5 | 8 | — | — |
| Wood Duck | — | 2 | — | — | — | — |
| Mallard | — | 2 | — | 1 | — | — |
| Common Merganser | — | — | — | 2 | — | — |
| Ruffed Grouse | — | — | — | 1 | — | — |
| Wild Turkey | — | 2 | — | — | — | — |
| Double-crested Cormorant | — | — | 1 | — | — | — |
| Great Blue Heron | — | — | — | 2 | — | — |
| Turkey Vulture | — | — | 5 | 15 | — | — |
| Sharp-shinned Hawk | — | — | 5 | — | — | — |
| Bald Eagle | — | — | — | 1 | — | — |
| Red-tailed Hawk | — | — | — | 1 | — | — |
| Killdeer | — | 1 | — | — | — | — |
| Rock Pigeon | — | — | — | 10 | — | — |
| Mourning Dove | 1 | 13 | 16 | 3 | — | — |
| Black-billed Cuckoo | — | 1 | 1 | — | — | — |
| Great Horned Owl | — | — | 1 | — | — | — |
| Common Nighthawk | — | — | — | 6 | — | — |
| Eastern Whip-poor-will | 2 | — | — | — | — | — |
| Chimney Swift | — | — | — | 4 | — | — |
| Ruby-throated Hummingbird | — | — | 7 | — | — | — |
| Red-headed Woodpecker | — | — | — | 1 | — | — |
| Red-bellied Woodpecker | — | 3 | 3 | 1 | — | — |
| Downy Woodpecker | — | 1 | — | 2 | — | — |
| Northern Flicker | — | — | 8 | 2 | — | — |
| Pileated Woodpecker | — | 1 | 2 | 1 | — | — |
| Eastern Wood-Pewee | — | — | — | 2 | — | — |
| Alder Flycatcher | — | — | — | 1 | — | — |
| Least Flycatcher | — | — | 1 | 1 | — | — |
| Eastern Phoebe | — | — | — | 3 | — | — |
| Great Crested Flycatcher | — | — | — | 6 | — | — |
| Blue-headed Vireo | — | — | 1 | — | — | — |
| Warbling Vireo | 1 | — | 1 | 3 | — | — |
| Philadelphia Vireo | — | — | 1 | — | — | — |
| Red-eyed Vireo | — | — | 2 | — | — | — |
| Blue Jay | — | 14 | 12 | 4 | — | — |
| American Crow | — | 1 | — | 6 | — | — |
| Northern Rough-winged Swallow | — | — | — | 2 | — | — |
| Tree Swallow | — | 8 | 2 | 13 | — | — |
| Bank Swallow | — | — | — | 1 | — | — |
| Barn Swallow | — | — | — | 2 | — | — |
| Black-capped Chickadee | — | 2 | 5 | 1 | — | — |
| Tufted Titmouse | — | — | — | 3 | — | — |
| White-breasted Nuthatch | — | 1 | — | 2 | — | — |
| Brown Creeper | — | — | — | 3 | — | — |
| House Wren | — | — | 2 | — | — | — |
| Winter Wren | — | — | — | 1 | — | — |
| Blue-gray Gnatcatcher | — | 1 | 2 | 2 | — | — |
| Ruby-crowned Kinglet | — | — | 22 | — | — | — |
| Eastern Bluebird | — | — | — | 2 | — | — |
| Veery | — | — | 1 | 1 | — | — |
| Swainson’s Thrush | — | — | 4 | 1 | — | — |
| Hermit Thrush | — | 8 | — | 1 | — | — |
| Wood Thrush | — | — | 2 | 4 | — | — |
| American Robin | 2 | 11 | 6 | 4 | — | — |
| Gray Catbird | — | 2 | 11 | 10 | — | — |
| Brown Thrasher | — | — | — | 1 | — | — |
| European Starling | — | — | — | 2 | — | — |
| Ovenbird | — | 2 | 4 | 4 | — | — |
| Northern Waterthrush | — | — | 2 | — | — | — |
| Blue-winged Warbler | — | — | — | 6 | — | — |
| Black-and-white Warbler | — | — | 1 | — | — | — |
| Tennessee Warbler | — | — | — | — | — | — |
| Orange-crowned Warbler | — | — | — | — | — | — |
| Nashville Warbler | — | — | — | — | — | — |
| Mourning Warbler | — | — | 1 | — | — | — |
| Common Yellowthroat | — | 2 | 3 | 6 | — | — |
| Hooded Warbler | — | — | — | 8 | — | — |
| American Redstart | — | — | 2 | 3 | — | — |
| Cape May Warbler | — | — | — | — | — | — |
| Northern Parula | — | — | — | — | — | — |
| Magnolia Warbler | — | — | 1 | — | — | — |
| Bay-breasted Warbler | — | — | — | 1 | — | — |
| Blackburnian Warbler | — | — | — | 2 | — | — |
| Yellow Warbler | — | — | 4 | 10 | — | — |
| Chestnut-sided Warbler | — | — | 3 | — | — | — |
| Blackpoll Warbler | — | — | — | 1 | — | — |
| Black-throated Blue Warbler | — | 1 | 2 | 1 | — | — |
| Palm Warbler | — | — | 3 | — | — | — |
| Pine Warbler | — | — | — | 1 | — | — |
| Yellow-rumped Warbler | — | — | — | — | — | — |
| Black-throated Green Warbler | — | — | — | 5 | — | — |
| Canada Warbler | — | — | — | — | — | — |
| Chipping Sparrow | — | — | — | 10 | — | — |
| Dark-eyed Junco | — | — | — | 1 | — | — |
| White-crowned Sparrow | — | — | 1 | — | — | — |
| White-throated Sparrow | — | — | 2 | — | — | — |
| Song Sparrow | — | 1 | — | 4 | — | — |
| Lincoln’s Sparrow | — | — | 2 | — | — | — |
| Eastern Towhee | — | — | — | — | — | — |
| Scarlet Tanager | — | — | — | 5 | — | — |
| Northern Cardinal | — | 1 | — | 5 | — | — |
| Rose-breasted Grosbeak | — | 1 | 2 | 2 | — | — |
| Indigo Bunting | — | — | — | 1 | — | — |
| Red-winged Blackbird | — | 18 | 3 | 6 | — | — |
| Rusty Blackbird | — | — | 2 | — | — | — |
| Common Grackle | — | 19 | — | 3 | — | — |
| Brown-headed Cowbird | — | 1 | — | 3 | — | — |
| Baltimore Oriole | — | 1 | 2 | 5 | — | — |
| American Goldfinch | — | — | 1 | 4 | — | — |
| House Sparrow | 6 | 4 | — | — | — | — |
