tinny pit call and twitters distinct from Anna’s. Costa’s generally plainer on throat and underparts, without dusky throat spotting. See black-chinned hummingbird.

But high-speed cameras show us what makes these birds perfect flying machines. A captive Anna’s hummingbird feeds while hovering before an optical illusion in a reenactment of an experiment that ...

Hummingbirds are perhaps our best-loved birds, but there’s a lot that people don’t know about them. What kinds of ...

Though the springtime is often considered the best time of year to put out your hummingbird feeder, Anna's hummingbirds (Calypte anna) is a persistent visitor which, in recent years, has ...

Engineers at Stanford University in California found that Anna's Hummingbird (pictured) is more efficient than the best micro helicopter Think the ratio of the bird's wings make it so efficient ...

An Anna's Hummingbird sipping from a California Fuchsia. A new study suggests that hummingbirds are accustomed to ingesting small amounts of alcohol from natural sources, such as nectar.

Another stunning close-up, this time of an Anna's hummingbird with its tongue extended. This photo ... [+] placed 41st in the contest. The tongue is somewhat translucent and works by capillary ...

Male Anna's hummingbirds have an iridescent pink face and typically weigh four grams — just under two pennies. Brian Allen, with the Audubon Society in Manistee, said he was called over to a ...

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