La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Renesting intervals and duration of the incubation and nestling periods of Sprague's Pipits
Auteurs :	Stephen K. Davis, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (80(3) SEP 2009)
Article en page(s) :	265-269
Langues:	Anglais
Résumé :	Sprague's Pipits (Anthus spragueii) are one of the least studied birds in North America, with most information about their breeding biology based on anecdotal observations at relatively few nests. I determined the renesting intervals of female Sprague's Pipits in south-central Saskatchewan and also summarized data about incubation and nestling periods of Sprague's Pipits in Saskatchewan and Manitoba to provide more robust estimates of these life-history parameters. Two of eight radio-marked females initiated replacement clutches after failed nesting attempts, with renesting intervals of 11-13 and 15-16 d, respectively. Of 74 banded females, 3 were subsequently recaptured at later nests during the same breeding season. Nests of two of these females failed due to inclement weather and their renesting attempts were initiated 6 and 7-11 d later, respectively. The third female successfully fledged young and then initiated another nest 17 d later. The new nests of females that renested were all located less than 150 m from previous nests. Incubation and nestling periods for known-aged nests ranged from

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