Redhead Ay thy a americana Ring-necked Duck Aythya collaris Canvasback Aythya valisineria Lesser Scaup Aythya afpnis Bufflehead Bucephala albeola Ruddy Duck Oxyura jamaicensis Eared Grebe Podiceps nigricollis Clark's Grebe Aechmophorus clarkii Double-crested Cormorant Phalacrocorax auritus American White Pelican Pelecanus erythrarhynchos Great Blue Heron Ardea herodias Cattle Egret Bubulcus ibis White-faced Ibis Plegadis chihi American Coot
Fulica americana Sandhill Crane Grus canadensis Killdeer Charadrius vociferans Semipalmated Plover Charadrius semipalmatus Black-necked Stilt Himantopus mexicanus American Avocet Recurvirostra americana Solitary Sandpiper Tringa solitaria Spotted Sandpiper Actitis mandarins Long-billed Curlew Numenius americanus Generic sandpiper Calidris sp.
Eleven waterbird species (American Black Duck, American Coot
, Bufflehead, Canada Goose, Gadwall, Hooded Merganser, Lesser Scaup, Mallard, Pied-Billed Grebe, Ring-Necked Duck, and Wood Duck) comprised at least 2.0% at either wetland during the 2 years of surveys.
Continuous breeding by American coots
in Dade County, Florida.
Of the crawfish competitors present, the following species were encountered at times in numbers great enough to concern farmers: Greater White-fronted Goose, Snow Goose, Gadwall, Mallard, Blue-winged Teal, Northern Shoveler, Northern Pintail, Green-winged Teal, Ring-necked Duck, Lesser Scaup, and American Coot
. We are unable to address the impact of predator and competitor birds; however, we understood the farmers' concerns about these issues and felt a study to address them was needed based on the major importance of these systems as waterbird habitat.
Birds that moved freely from pond to pond to feed socially or in mixed-species flocks on fish (e.g., American White Pelican, cormorants), foliage and seeds (ducks, American Coot
), or invertebrates (Northern Shoveler, Ruddy Duck, Lesser Scaup, Wilson's Phalarope, peeps) were in larger flocks (Table 2).
(Fulica americana).--Nesting coot populations on the floodplain, like those of Sora and Common Moorhen, have declined in recent years.
For example, the greatest number of American Coots
encountered in 10 years were present during the 1996-1997 season skewing their representation somewhat compared to other water bird species (Table 1a, b).
As a six-year-old, DEC's Jeff Mapes spotted an American coot
at a reservoir while helping his father, retired Conservationist contributor Alan Mapes, with the Albany County count.
Avian vacuolar myelinopathy (AVM) is a neurologic disease causing recurrent mortality of bald eagles (Haliaeetus leucocephalus) and American coots
(Futica americana) at reservoirs and small impoundments in the southern USA.
The 1191 bird specimens were represented by 81 species, dominated by laughing gulls (N=214), starlings (N=151), American coots
(N=121), boat-tailed grackles (N=74), mourning doves (N=61), and red-winged blackbirds (N=52).
Here I report an observation of swimming night-herons successfully kleptoparasitizing American coots