Actitis

tupacincai Hospedero Larus belcheri Actitis macularia Localidad Peru Chicama, Peru De acuerdo con Presente Freitas et al.

2016: Identifying the sex of the common sandpiper (Actitis hypoleucos) by linear measurements.

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.

Accumulation of selenium and lack of severe effects on productivity of american dippers (Cinclus mexicanus) and spotted sandpipers (Actitis macularia).

pusilla has a narrow band migration pattern and moderate dispersion on spring and summer sites (14), whereas Actitis macularia presents a distinctly different migration pattern on broad fronts with many stopover sites (14,15) and a broad dispersion on spring and summer grounds (14).

Up to 6.4% of the species observed had no breeding opportunities within the study area (Actitis hypoleucos, Aquila pomarina, Merops apiaster, Muscicapa striata, Phylloscopus trochilus, and Sylvia borin).

Scolopacidae Actitis hypoleucos Common sandpiper Calidris minuta Little stint Philomachus pugnax Ruff Tringa glareola Wood sandpiper 35.

Relative intensity of predation also was: 1) high but variable on relatively rare, migrant belted kingfishers in both segments; 2) more variable on species that sustained lower relative intensity of predation in the usually turbid segment; and 3) zero on some species that were relatively abundant during pre-nesting or nesting periods, such as gadwalls (Anas strepera), buffleheads (Bucephalus albeola), and spotted sandpipers (Actitis macularia), respectively (Tables 1 and 2).

Rhydwyr ydi llawer o'r rhain - adar fel pioden y mor (Haematopus ostralegus), y gylfinir (Numenius arquata), y pibydd coesgoch (Tringa totanus) a phibydd y dorlan (Actitis hypoleucos).