fresh water

Great Missoula Flood - Scablands and Plunge Pools

During the last ice age, a lobe of the ice sheet covering western Canada dammed the Clark Fork River, creating a vast lake in what is now northwestern Montana. Several times during the past 15,000 years, the ice dam broke, sending hundreds of cubic miles of water roaring across the inland... read more »

RELATED
Topics & Themes:  history

Pied-billed Grebes - With Martin Muller

Birds, while guided by instinct, seem able to adapt to specific situations. Martin Muller is an expert on waterbirds called Pied-billed Grebes. One spring day, on an urban lake in Seattle, Martin observed a pair of grebes switching roles in order to protect their young and defend their territory.... read more »

RELATED
Topics & Themes:  nesting

Oxbow Lakes

You’ll find an oxbow lake, rich with birdlife, at Bowdoin National Wildlife Refuge in eastern Montana. The lake was initially a meander in the Missouri River, left when the river took a short cut; the abandoned loop became Lake Bowdoin. Large numbers of Ring-billed, Franklin’s and California... read more »

RELATED

Frank Bellrose and the Wood Ducks

In the 1800s, Wood Ducks were possibly the most abundant ducks east of the Mississippi. But the draining of wetlands, the cutting of forests, and market hunting caused precipitous declines. In 1918, the Migratory Bird Treaty Act completely banned the hunting of Wood Ducks for 23 years. This... read more »

RELATED
Topics & Themes:  nesting

Pelicans Go Fishing

Unlike Brown Pelicans, which dive from above to capture fish, White Pelicans feed by forming a group. They swim in a line, and - while herding a school of fish - all dip their heads at once. The pelican's broad bill spreads its huge pouch, as the bird pushes through the water. As each bird lifts... read more »

RELATED

Osprey Return to Pennsylvania - Interview with Larry Rymon

Ospreys, common along the rivers of Pennsylvania, stopped nesting there in the 1950s, due to the effects of DDT. But in 1980, Larry Rymon, a professor of biology, began to restore Ospreys to Pennsylvania. Larry says: "Osprey have been a part of this planet's wildlife for 17 million years. They... read more »

RELATED
Topics & Themes:  nesting, science

Swans Benefit from Bob Heirman Wildlife Park

In the late 1970s in Washington State, bulldozers began mining gravel on the banks of the most productive steelhead fishing spot on the Snohomish River. This raised the ire of Bob Heirman and his local sportsmen's club. They took on Dave Beck, Jr., head of the mining company and son of the... read more »

RELATED
Topics & Themes:  environmental champion

Amazing Pied-billed Grebe

The small, nondescript Pied-billed Grebe has an astonishing talent. The grebe is the master of its own buoyancy. It can squeeze out both the air trapped in its feathers and in its internal air-sacs and sink effortlessly. Learn more about the amazing, sinking Pied-billed Grebe at Cornell's... read more »

RELATED
Topics & Themes:  Hollywood

Jaegers Give Chase in September

A tern or gull plunges headfirst into the water, then bounces aloft grasping a small fish in its bill. But before the bird can swallow its catch, a Parasitic Jaeger swoops in. The jaeger nips the bird's wing, and it drops its hard-won fish. The pirate catches the fish in mid-air and gulps it down... read more »

RELATED

Gulls or "Seagulls"?

Gulls seem so much a part of the sea that we often just call them "seagulls," a colloquial title for these graceful, ubiquitous creatures. Twenty-two species breed in North America. The Pacific coast is home to the aptly named Western Gulls. The familiar Ring-billed Gull nests all across the... read more »

RELATED
Topics & Themes:  ornithology

Pages