Images

A Pacific chorus frog (Pseudacris regilla) in a meadow located in Lassen Volcanic National Park.

Great Blue Heron standing in the water.

Dinosaur tracks in the Jurassic Moenave Formation. It is a popular site for tourists to stop and meet local Navajo and Moenkopi Hopi guides who lead short tours through the tracks area.

Image of a Male Sharp-tailed grouse during spring breeding season in North Dakota

Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.

A tundra shrew (Sorex tundrensis) from Far East Siberia.

Male Eastern tiger swallowtail butterfly resting on a leaf.

Male Eastern tiger swallowtail butterfly drinks nectar from a flower.

Male Eastern tiger swallowtail butterfly drinks nectar from a flower.

Sagebrush in central Idaho.

Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.

Big sagebrush near Parawon, UT.

Atlantic salmon runs in the Penobscot and Kennebec Rivers of Maine are federally endangered and remain low. Inefficient fishways at dams continue to slow and prevent upstream migrations to spawning habitat, and delays of weeks to months are common. These delays expose fish to elevated water temperatures, resulting in increased metabolic demands.

Tree ferns and a waterfall visible in the background in a mountainous rainforest garden.

Tropical rainforest vegetation including tree ferns, epitphytes, vines, bromeliads, and a waterfall in a mountainous rainforest garden.

A forested glade along the Fern Lake Trailhead in Rocky Mountain National Park.

Side view of giant panda. Mei Xiang is a female panda at the National Zoo in Washington D.C. She is being studied by scientists in efforts to save the endangered species.

Giant panda on grass. Mei Xiang is a female panda at the National Zoo in Washington D.C. She is being studied by scientists in efforts to save the endangered species.

Tree ferns and profuse tropical vegetation framing a mountainside waterfall, visible in the background, in a rainforest garden.

Tree ferns, ephiphytes, bromeliads, banana plants, and other rainforest vegetation framing a waterfall, visible in the background, in the tropical rainforest mountains.

Giant panda on rock. Mei Xiang is a female panda at the National Zoo in Washington D.C. She is being studied by scientists in efforts to save the endangered species.