Jeff Mitton

Great egrets usually hunt in shallow water, stalking small fish, which they swallow whole.

An understated characterization of quaking aspen is that it grows in many different plant communities, in many different ways and has adapted to an extremely wide range of environments.

Trilobite beetles are perhaps the most bizarre of all the net-winged beetlesSome insects are cryptic, blending in with their backgrounds to hide from predators, while others are brightly colored, noisy, or form dense and conspicuous aggregations to

Dusky grouse are effectively camouflaged and cryptic much of the year, but when it comes to the spring mating season, the males are bright and bold.

Evolutionary biologists have found fossil evidence of 110 species of pterosaurs, with wing spans ranging from 10 inches to over 33 feetI scout potential sites for camping and photography trips by looking at maps and reading about landscapes and

With dry air and clear skies, people in the west have much greater opportunity to enjoy the light shows at dawn and dusk and celestial phenomena. Following are comments and details, each starting with a question about mechanisms. 

Boulder residents were acutely aware of the wildfires, for they had been breathing smoke since the Pine Gulch fire started near Grand Junction on July 31. But the proximity of the CalWood Fire and the sight of roiling smoke rising and forming pyrocumulus clouds at the northern edge of Boulder brought the terrible threat home.

A minimum of 21 subspecies have been described, usually geographically separated but sometimes with geographic ranges sharing a borderButterflies flitted among flowers beside South Boulder Creek, in Boulder's greenbelt near the town of Marshall.

Prickly poppies are distinguished from other species in the genus Argemone by the lack of spines on the upper sides of leavesPrickly poppies, Argemone polyanthemos, were abundant and in full bloom along the Degge Trail in the greenbelt north Boulder

Wielding all of these defenses, these moths have little to fear from birds or bats and they ignore photographers with impunityTriangular leaf senecio, Senecio triangularis, is common on the eastern slope of Cimarron Ridge in the San Juan Mountains,