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 ...

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Hummingbirds — those neurotic, nectar-loving jewels that brighten up backyards — have arrived in the Fort Collins area a couple of weeks ahead of schedule, coaxed by Colorado's warm spring.

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 ...

It's summer, which means that it's also hummingbird migration season! If you want a chance to see these delicate creatures up close, you have the chance to attend a free banding demonstration in ...

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 ...