Images

Tamarac National Wildlife Refuge, Hyla versicolor - Gray Treefrog, ARMI photo by Mark Roth. UMESC

Avalanche debris fills a drainage along Going-to-the-Sun Road near Triple Arches. 5/21/2009

Boat equipped with multibeam sonar surveying the bed of the Colorado River in May 2009. Instrument in foreground is robotic total station that automatically tracks boat location and radios the position to a computer on the boat 20 times per second.

The morning after a full moon high tide spawn, thousands of horseshoe crabs wait on the mud flats for the high tide to return.

Red knots forage for horseshoe crab eggs and other invertebrates on the beaches of Delaware Bay.  The bird on the left has a white leg flag marked with an "EX." It was initially capture in Canada in the fall of 2008.

Spawning horseshoe crabs at twilight in the Delaware Bay.

Red knots forage for horseshoe crab eggs and other invertebrates on the beaches of Delaware Bay. The bird in the center has an orange leg flag indicating it was captured and flagged in the past in Argentina.

Insect-eating Brazilian Free-Tailed bats (Tadarida brasiliensis) provide a great pest-control service to agriculture and natural ecosystems.

Acipenseriformes free embryo (pallid sturgeon, shovelnose sturgeon, or paddlefish) collected from the Missouri River.  

Road plows begin removing wet slab avalanche debris on Going to the Sun Road in Glacier National Park, 2009.

Regular avalanche activity keeps this path clear of trees. Snowy peaks of Glacier National Park in the background.

Hunting for minnows in a freshwater swamp, LA

Debris from Red Rock Avalanche covers the road and is piled high along the banks of the river as a skier make his way along the road, 04/06/2009

Japanese flowering cherry tree blooms near the Jefferson Memorial.

An Autumnalis cherry blossom tree is photographed during peak bloom with the Washington Monument and Tidal Basin in the background.

A female silky flycatcher with a mistletoe berry in her beak. These flycatchers are intimately tied to mistletoe. They build their beautiful cup nests (much like a large hummingbird nest) within the mistletoe, or nearby. The young hatch during February when the mistletoe may be in flower and supply a rich source of insect nutrients for growing young.

An example of human activities that impact the earth's atmosphere.

Rough-skinned newt in defensive posture, EPA ponds, Corvallis, OR. Rough-skinned newts produce a powerful neurotoxin as a defense against predators. 

A golden eagle perches in a tree at the William L. Finley National Wildlife Refuge, Oregon.

Bald eagles nest in Louisiana, numbers are expanding rapidly

Hummingbirds traditionally wintering in the tropics now routinely winter along the northern Gulf of Mexico coast