La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Determining the Diet of Whooping Cranes (Grus americana) Through Field Measurements (2018)
Auteurs :	Jeb Barzen, Auteur ; Ted Thousand, Auteur ; Julia Welch, Auteur ; Megan Fitzpatrick, Auteur ; Tran Triet, Auteur
Type de document :	Article
Dans :	Waterbirds (41(1) March, 2018)
Article en page(s) :	22-34
Résumé :	Though an important measure for ecological studies, obtaining foraging data through direct observation is rarely assessed independently. Using field measurements (foraging habitat, food acquisition behavior, and food manipulation time), the summer diet of Whooping Cranes (Grus americana) in Wisconsin, USA, was determined; foods consumed based on foraging behavior were identified; and ingestion for Sandhill Cranes (Antigone canadensis) was assessed. Based on 102 observations, Whooping Cranes occupying six territories consumed 17 food items (verified with images), of which 90 samples from nine foods were modeled. Food manipulation time predicted food size: ln(y) = 3.50 + 0.45ln(x) - 0.05ln(x(2)) (r(2) = 0.63, P

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