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Past Shows

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Birds and Bird Conservation Matter - Interview with David Yarnold

We asked David Yarnold, President of National Audubon, why bird conservation matters. He says that preserving wild places and preserving the links in nature's chains allow wildlife to thrive. Where birds thrive, you're going to have clean water and clean air, and that's good for kids, and it's... read more »

RELATED
Topics & Themes:  birdwatching

The Pecking Order

Birds in flocks almost invariably develop a pecking order. An alpha chicken can peck any other in the flock, and a beta chicken can peck all others but the alpha bird. Juncos and other small birds have a pecking order, too. The pecking order - or dominance hierarchy - of a flock of birds is... read more »

RELATED
Topics & Themes:  science

American Bittern - Thunder-Pumper

American Bitterns nest in marshes across the northern half of the United States and throughout much of Canada, and they winter along both US coasts south into Central America. But in some places, bitterns are in serious trouble. Much of the extensive, shallow marshland they once bred in has been... read more »

RELATED
Topics & Themes:  vocalization

Why Birds Stand on One Leg

Birds' legs have an adaptation called "rete mirabile" that minimizes heat loss. The arteries that transport warm blood into the legs lie in contact with the veins that return colder blood to the bird's heart. The arteries warm the veins. Because the veins also cool the arteries, the bird’s feet... read more »

RELATED
Topics & Themes:  science

Why Birds Stand on One Leg

Birds' legs have an adaptation called "rete mirabile" that minimizes heat loss. The arteries that transport warm blood into the legs lie in contact with the veins that return colder blood to the bird's heart. The arteries warm the veins. Because the veins also cool the arteries, the bird’s feet... read more »

RELATED
Topics & Themes:  science

Are Northern Forest Owls Coming South This Winter?

The boreal forest stretches across Canada and Alaska, a huge expanse of woods, wetlands and wilderness. And it’s full of magnificent forest owls that depend on mice and other rodents for food. Those populations can boom and bust, so in lean years, hungry owls often fly as far south as the... read more »

RELATED
Topics & Themes:  ecology

Are Northern Forest Owls Coming South This Winter?

The boreal forest stretches across Canada and Alaska, a huge expanse of woods, wetlands and wilderness. And it’s full of magnificent forest owls that depend on mice and other rodents for food. Those populations can boom and bust, so in lean years, hungry owls often fly as far south as the... read more »

RELATED
Topics & Themes:  ecology

Are Northern Forest Owls Coming South This Winter?

The boreal forest stretches across Canada and Alaska, a huge expanse of woods, wetlands and wilderness. And it’s full of magnificent forest owls that depend on mice and other rodents for food. Those populations can boom and bust, so in lean years, hungry owls often fly as far south as the... read more »

RELATED
Topics & Themes:  ecology

Encounter with a Cassowary

In a tropical woodland in eastern Australia, you glimpse a Southern Cassowary, a huge flightless bird that must rate as the most prehistoric looking of all birds. Cassowaries are capable of making remarkable sounds, including the lowest known bird call in the world, barely audible to the human... read more »

RELATED
Topics & Themes:  sound, vocalization

Pelicans Go Fishing

There are two kinds of pelicans in North America – the American White Pelican and the Brown Pelican. And they’ve evolved different tactics to catch their prey. read more »

RELATED
Topics & Themes:  ecology
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