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 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…

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…

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.