(Hamilton/Trenton Marsh)
Bird Species
| Common Name | Count of Location | 2008_04_19 | 2007_05_13 | 2007_04_21 | 2006_01_21 | 1999_05_01 |
| Count of Species IDed | 73 | 23 | 42 | 36 | 19 | 27 |
| Pied-billed Grebe | 1 | 1 | ||||
| Double-crested Cormorant | 2 | 1 | 1 | |||
| Bittern sp. | 1 | 1 | ||||
| Great Blue Heron | 3 | 1 | 1 | 1 | ||
| Great Egret | 1 | 1 | ||||
| Little Blue Heron | 1 | 1 | ||||
| Turkey Vulture | 2 | 1 | 1 | |||
| Canada Goose | 5 | 1 | 1 | 1 | 1 | 1 |
| Mute Swan | 4 | 1 | 1 | 1 | 1 | |
| Wood Duck | 3 | 1 | 1 | 1 | ||
| Gadwall | 2 | 1 | 1 | |||
| American Wigeon | 1 | 1 | ||||
| Mallard | 4 | 1 | 1 | 1 | 1 | |
| Blue-winged Teal | 1 | 1 | ||||
| Northern Pintail | 1 | 1 | ||||
| Common Merganser | 1 | 1 | ||||
| Osprey | 3 | 1 | 1 | 1 | ||
| Cooper's Hawk | 1 | 1 | ||||
| Red-tailed Hawk | 3 | 1 | 1 | 1 | ||
| American Kestrel | 1 | 1 | ||||
| American Coot | 3 | 1 | 1 | 1 | ||
| Common Snipe | 1 | 1 | ||||
| Laughing Gull | 1 | 1 | ||||
| Ring-billed Gull | 2 | 1 | 1 | |||
| Herring Gull | 1 | 1 | ||||
| Mourning Dove | 2 | 1 | 1 | |||
| Yellow-billed Cuckoo | 1 | 1 | ||||
| Chimney Swift | 3 | 1 | 1 | 1 | ||
| Belted Kingfisher | 1 | 1 | ||||
| Red-bellied Woodpecker | 4 | 1 | 1 | 1 | 1 | |
| Downy Woodpecker | 4 | 1 | 1 | 1 | 1 | |
| Hairy Woodpecker | 1 | 1 | ||||
| Northern Flicker | 3 | 1 | 1 | 1 | ||
| Eastern Wood-Pewee | 1 | 1 | ||||
| Great Crested Flycatcher | 2 | 1 | 1 | |||
| Eastern Kingbird | 1 | 1 | ||||
| Warbling Vireo | 2 | 1 | 1 | |||
| Red-eyed Vireo | 1 | 1 | ||||
| Blue Jay | 2 | 1 | 1 | |||
| American Crow | 2 | 1 | 1 | |||
| Fish Crow | 4 | 1 | 1 | 1 | 1 | |
| Tree Swallow | 4 | 1 | 1 | 1 | 1 | |
| Northern Rough-winged Swallow | 1 | 1 | ||||
| Carolina Chickadee | 2 | 1 | 1 | |||
| Chickadee sp. | 1 | 1 | ||||
| Tufted Titmouse | 3 | 1 | 1 | 1 | ||
| White-breasted Nuthatch | 2 | 1 | 1 | |||
| Carolina Wren | 4 | 1 | 1 | 1 | 1 | |
| Blue-gray Gnatcatcher | 1 | 1 | ||||
| Ruby-crowned Kinglet | 2 | 1 | 1 | |||
| Veery | 1 | 1 | ||||
| Hermit Thrush | 1 | 1 | ||||
| American Robin | 4 | 1 | 1 | 1 | 1 | |
| Gray Catbird | 2 | 1 | 1 | |||
| European Starling | 2 | 1 | 1 | |||
| Yellow Warbler | 2 | 1 | 1 | |||
| Black-throated Blue Warbler | 1 | 1 | ||||
| Yellow-rumped Warbler | 3 | 1 | 1 | 1 | ||
| Palm Warbler | 1 | 1 | ||||
| American Redstart | 1 | 1 | ||||
| Northern Waterthrush | 1 | 1 | ||||
| Canada Warbler | 1 | 1 | ||||
| Song Sparrow | 3 | 1 | 1 | 1 | ||
| White-throated Sparrow | 1 | 1 | ||||
| Northern Cardinal | 3 | 1 | 1 | 1 | ||
| Red-winged Blackbird | 4 | 1 | 1 | 1 | 1 | |
| Rusty Blackbird | 2 | 1 | 1 | |||
| Common Grackle | 1 | 1 | ||||
| Brown-headed Cowbird | 1 | 1 | ||||
| Orchard Oriole | 1 | 1 | ||||
| Baltimore Oriole | 2 | 1 | 1 | |||
| American Goldfinch | 4 | 1 | 1 | 1 | 1 | |
| House Sparrow | 2 | 1 | 1 |