An Interspecific Mixed Clutch of Semipalmated Sandpiper and Lapland Longspur Eggs

Autor:	Paul F. Woodard, F M Smith, Christine M. Anderson
Rok vydání:	2016
Předmět:	0106 biological sciences Brood parasite Lapland longspur food.ingredient Sandpiper Ecology Interspecific competition Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences 010605 ornithology Calidris Altricial food Nest Animal Science and Zoology Precocial
Zdroj:	Waterbirds. 39:323-326
ISSN:	1938-5390 1524-4695
DOI:	10.1675/063.039.0301
Popis:	Semipalmated Sandpipers (Calidris pusilla) and Lapland Longspurs (Calcarius lapponicus) share similar nesting habitat preferences on small islands in the Mackenzie River Delta, Northwest Territories, Canada. A Semipalmated Sandpiper was observed incubating a mixed clutch of its own eggs with two smaller eggs presumed to be from a Lapland Longspur. This is a unique combination of a precocial and an altricial species' eggs in the same nest. Possible explanations for the occurrence of this interspecific mixed clutch include nest parasitism, accidental laying, opportunistic egg dumping, or nest usurpation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0118cbaf873ca1ca0a2483539e2764d5 https://doi.org/10.1675/063.039.0301 Zobrazit plný text záznamu