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Past Shows

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The Great Horned Owl Nest

When Great Horned Owl eggs hatch, the downy owlets are the size of newborn chickens. Their mother broods them day and night. A few weeks later, the owlets can be left alone while both adults resume hunting at twilight. Great Horned Owl young remain in the nest for about six weeks, then climb out... read more »

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Topics & Themes:  nesting

Walking on Eggshells

Walking on eggshells usually means dealing with something delicate, fragile. But eggs are far from fragile. An egg has to be strong enough to withstand the weight of an adult bird during incubation. But the tiny, weak baby bird within has to be able to peck its way out. Is it true that if you... read more »

RELATED
Topics & Themes:  language

Why Birds Sing

Why do birds sing? Ornithologists have learned that the longer hours of light that come with spring trigger the release of hormones in birds. These hormones prompt the enlargement of the birds' gonads which, in turn, stimulate male birds to sing. Male birds - like this Black-headed Grosbeak - can... read more »

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Topics & Themes:  breeding display, nesting, vocalization

Biomimicry - Japanese Trains Mimic Kingfisher

High-speed passenger trains in Japan were once a real headache, because their engineering caused a "tunnel boom," a huge boom created by air being pushed out of the tunnel ahead of a train. But the chief engineer for the West Japan Railway Company was a birder, and he’d seen Eurasian... read more »

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Topics & Themes:  science

Snatching Berries on the Wing

When American Robins gather to pluck berries, you can expect to see a lot of fluttering. The robins are heavy, making it a lot harder to perch and creep along a thin stem. And they have long, strong legs because they spend so much time walking and hopping on the ground in search of food. An easy... read more »

RELATED
Topics & Themes:  backyard sanctuary

The Nightingale

From Hans Christian Andersen... Long ago, in an emperor's garden, lived a Nightingale. The emperor ordered the bird to be brought to him, and she was locked in a golden cage. When the emperor received a mechanical Nightingale, the real Nightingale was banished. Years later, the emperor lay dying.... read more »

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Topics & Themes:  myth

Singer's Brain Changes with the Seasons

In higher animals, the brain is like a BMW — amazing engineering, but expensive to run. In a human, the brain uses about 10 times more energy than other organs. A bird's system is exquisitely attuned to this expense. Several species, including Black-capped Chickadees, have adapted in a... read more »

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Topics & Themes:  science, vocalization

An Avian Big Bang

Many scientists believe that the demise of the dinosaurs began when an asteroid struck the earth 66 million years ago. Some dinosaurs survived, and among them were the early ancestors of birds. Recently an international research team sequenced the genomes of 45 birds of diverse lineages. The... read more »

How Long Does a Robin Live

The mortality rate is high in our familiar songbirds. For robins, it's around 50% each year once young birds have fledged. If a robin survives to midwinter, it lives an average of 1.7 years after that. The oldest robins in your yard might be about six years old, although one banded bird lived... read more »

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Topics & Themes:  ecology, nesting, science

Beauty and Secrecy: The Montezuma Quail

The Montezuma Quail is a tiny bird of Mexican mountains and the Southwestern US. It appears boldly colored in the open but disappears into the brush as if invisible. Habitat loss and overgrazing have diminished the bird’s range, but conservation agencies have been working together to protect it... read more »

RELATED
Topics & Themes:  birding, birdwatching

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