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Age, Habitat, and Yearly Variation in the Diet of a Generalist Insectivore, the Southwestern Willow Flycatcher

Durst, Scott L. and Theimer, Tad C. and Paxton, Eben H. and Sogge, Mark K. (2008) Age, Habitat, and Yearly Variation in the Diet of a Generalist Insectivore, the Southwestern Willow Flycatcher. Condor, 110 (3). pp. 514-525. ISSN 1938-5129

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Publisher’s or external URL: http://dx.doi.org/10.1525/cond.2008.8493

Abstract

The article presents a study which examines the age, habitat, and yearly variation in the diet of a generalist insectivore, the southwestern Willow Flycatcher at Roosevelt Lake in central Arizona. It focuses on the five prey categories which were accounted for 70% of the proportional abundance in flycatcher diet, including Hymenoptera, Diptera, Cicadellidae, Coleoptera, and Formicide. It states that there were no detected differences in diet between sexes of adults, but adults and nestling samples differed, with higher proportions of Hymenoptera in adult samples and more Diptera in nestling samples. It discusses the comparison between flycatcher diet in habitat patches dominated by native cottonwood and willow, exotic salt cedar, or a mix of the three species.

Item Type: Article
Publisher’s Statement: © 2008 The Cooper Ornithological Society.
ID number or DOI: 10.1525/cond.2008.8493
Keywords: Alaska; ANIMAL behavior -- Age factors; ANIMAL habitations; Annual variation; Arizona; Diptera; Empidonax traillii extimus; ENDANGERED species; FEEDING behavior in animals; Feeding ecology; Food availability; FOOD consumption; food resources; food resources; foraging ecology; FOREST birds; gnatcatcher; HABITAT (Ecology); Hymenoptera; prey; riparian; SOUTHWESTERN willow flycatcher; Tamarix; tamarix-ramosissima; THEODORE Roosevelt Lake (Ariz.); tits; warblers
Subjects: Q Science > QL Zoology
NAU Depositing Author Academic Status: Faculty/Staff
Department/Unit: College of Engineering, Forestry, and Natural Science > Biological Sciences
Date Deposited: 30 Sep 2015 22:32
URI: http://openknowledge.nau.edu/id/eprint/520

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