Yellow-billed Tit-Tyrant Anairetes flavirostris
Version: 2.0 — Published July 9, 2020
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Diet and Foraging
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Main Foods Taken
Insects; grass seeds occasionally eaten.
Microhabitat for Foraging
Forages in shrubs and bushes; tends to forage in sparser shrubs.
Food Capture and Consumption
While foraging, this flycatcher is constantly moving, flicking its tail, pivoting, and holding its wings slightly drooped at the sides; often holds itself in a horizontal posture (10), sometimes with tail slightly cocked; occasionally flicks the wings upright over the back while foraging; at least sometimes movements may simply be balancing actions (10). It makes short, frequent flights to capture prey, often from branch to branch at the tops of shrubs. It primarily plucks insects from plants, using a perch-glean foraging strategy (17), but it also takes prey from foliage with hover-gleans, or, occasionally, from the air with a short sally (18, 10).
Major Food Items
Diet consists primarily of insects, occasionally also grass seeds (19). Specific prey items identified during the examination of stomach contents (n = 5) are Coleoptera (beetles, including cicindelids), Hemiptera (true bugs), Hymenoptera, and larval Lepidoptera (caterpillars, including larval noctuid moths) (20).
Food Selection and Storage
Nutrition and Energetics
Metabolism and Temperature Regulation
Drinking, Pellet-Casting, and Defecation