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The house finch is a moderate-sized finch, 12.5 to 15 cm (5 to 6 in) long, with a wingspan of 20 to 25 cm (8 to 10 in). Body mass can vary from 16 to 27 g (9 ⁄ 16 to 15 ⁄ 16 oz), with an average weight of 21 g (3 ⁄ 4 oz).
Flock (birds) Red-billed queleas form enormous flocks—sometimes tens of thousands strong. A flock is a gathering of individual birds to forage or travel collectively. [ 1] Avian flocks are typically associated with migration. Flocking also offers foraging benefits and protection from predators, although flocking can have costs for individual ...
The American goldfinch ( Spinus tristis) is a small North American bird in the finch family. It is migratory, ranging from mid- Alberta to North Carolina during the breeding season, and from just south of the Canada–United States border to Mexico during the winter. The only finch in its subfamily to undergo a complete molt, the American ...
House finches also love to eat the nyjer and sunflower seeds. Watch your house finches also in case there may be a couple of purple finches mixed in — you can tell the difference pretty plainly ...
Passer ahasvar Kleinschmidt, 1904. The house sparrow ( Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz). Females and young birds are coloured pale brown and grey, and males have brighter black ...
A mixed-species feeding flock, also termed a mixed-species foraging flock, mixed hunting party or informally bird wave, is a flock of usually insectivorous birds of different species that join each other and move together while foraging. [ 1] These are different from feeding aggregations, which are congregations of several species of bird at ...
A swarm-like flock of starlings. Flocking is the behavior exhibited when a group of birds, called a flock, are foraging or in flight. Sheep and goats also exhibit flocking behavior. Computer simulations and mathematical models that have been developed to emulate the flocking behaviours of birds can also generally be applied to the "flocking ...
Flocks of black birds have been spotted in backyards and parks over the past few weeks in the Triangle, causing many of us to do a double take when we leave our homes or pass a large, grassy field ...
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