Breeding biology and provisioning of nestling snow buntings in the Canadian High Arctic

Autor:	C. Myles Falconer, Erica Nol, Mark L. Mallory
Rok vydání:	2007
Předmět:	biology Nest Ecology Foraging Seasonal breeder Emberizidae General Agricultural and Biological Sciences biology.organism_classification Paternal care Plectrophenax Brood Predation
Zdroj:	Polar Biology. 31:483-489
ISSN:	1432-2056 0722-4060
Popis:	We examined basic breeding biology, as well as the effects of parental sex, brood size, nestling age, and nest habitat on foraging distances and parental food delivery rates of snow buntings (Plectrophenax nivalis) on Devon Island, NT, Canada, in the summers of 2003–2006. Clutch sizes and initiation dates were similar to those found in previous studies, although nest density was much higher. Feeding rates and foraging distances of buntings differed depending on the size and age of the brood, but were similar between nest habitats. Unlike in earlier studies, we found that male buntings made fewer feeding visits, but traveled longer distances to forage for food than females. Whether these differences between the sexes relate to reducing competition for prey, or to differing sex roles in parental care due to the poorly insulated nest cavities of this species, remains to be determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cea36062ff786f601900eb9d72fd62b6 https://doi.org/10.1007/s00300-007-0374-z Zobrazit plný text záznamu Full text from SpringerLink