While humans have three color cones in the retina sensitive to red, green and blue light, birds have a fourth color cone that can detect ultraviolet light. A research team led by Princeton's Mary ...

billy barr tells us the lilies emergence is out of sync with the hummingbirds arrival. billy barr looks through the logs he's been keeping for almost 50 years. He explains how the glacier lilies ...

Add Yahoo as a preferred source to see more of our stories on Google. Fall migration has already begun for ruby-throated hummingbirds and they're making their way South to warmer climates for the ...

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It's summer, which means that it's also hummingbird migration season! If you want a chance to see these delicate creatures up ...

Small, numbered rings reveal the secrets of hummingbird migration! Learn all about the importance and process of hummingbird ...

A Steamboat Springs resident for 52 years and a retired middle school science teacher, Winston Walker is among many hummingbird enthusiasts who are paying close attention to the flashy hummers at ...

Hummingbirds are some of the most interesting and unique birds in the Americas. And while you may consider yourself lucky if you spot one at your backyard bird feeder, imagine how special it would be ...