Image: The Ultimate Bird Drawing Throwdown Showdown Graphic featuring images of David Sibley and H. Jon Benjamin

Join BirdNote tomorrow, November 30th!

Illustrator David Sibley and actor H. Jon Benjamin will face off in the bird illustration battle of the century during BirdNote's Year-end Celebration and Auction!


Shows With Contributions by Dan Streiffert

American Robin listening for worm under the ground

Does a Robin Hear Its Worm?

How does a robin know a worm is in one exact spot? Does it see the worm or hear it? Smell it? Sense its movements through its feet? To find the answer, researchers buried worms in soil in a tray. They covered the soil with a thin but opaque sheet of cardboard, followed by more soil, so the…
Olive-sided Flycatcher

Another BirdNote Quiz

This quiz features - an American Robin ... - an Olive-sided Flycatcher, like this one ... - a Red-tailed Hawk ... - a Steller's Jay, which you're most likely to hear west of the Rockies ... - and a Blue Jay, usually seen east of the Rockies. Support for BirdNote comes from American Bird…
Black-headed Grosbeak

Grosbeaks and Monarchs

Black-headed Grosbeaks are one of very few birds that regularly eat Monarch butterflies. Most birds and other animals find the butterflies unpalatable, if not downright toxic. The caterpillars of Monarchs consume milkweeds that contain toxic substances known as cardenolides. The poison is…
Black-headed Grosbeak

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…
Black-headed Grosbeak

Black-headed Grosbeak Sings!

The song of this male Black-headed Grosbeak has been described as that of a drunken or scat-singing robin. Compare the songs of both birds, and draw your own conclusion! Singing Black-headed Grosbeaks can be heard from May well into summer, especially in streamside woods.