La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Food habits and resource partitioning in a guild of Neotropical swifts (2015)
Auteurs :	Charles T. Collins, Auteur
Type de document :	Article
Dans :	Wilson Journal of Ornithology (The) (127(2) June 2015)
Article en page(s) :	239-248
Résumé :	ABSTRACT The Coastal Cordillera of Venezuela has a rich avifauna including swifts. The aerial arthropod prey of three species found there, Gray-rumped Swift (Chaetura cinereiventris), Vaux?s Swift (Chaetura vauxi), and White-tipped Swift (Aeronautes montivagus), included spiders plus nine orders and 110 families of insects. Diptera and Hymenoptera were the most numerous prey taxa (>60%) taken by all three swifts. Prey size ranged from 0.5?17.9 mm body length, and averaged 2.69 mm for Gray-rumped Swifts, 2.91 mm for Vaux?s Swifts, and 5.52 mm for White-tipped Swifts. Niche breadth was similar in Gray-rumped and Vaux?s Swifts (2.4 and 3.13), and niche overlap was also high (0.98). Niche breadth was higher in White-tipped Swifts (8.49) and niche overlap was
En ligne :	http://dx.doi.org/10.1676/wils-127-02-239-248.1

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