Pacific Golden-Plovers, known as Kolea, winter in grassy, open areas of the Hawaiian islands by the tens of thousands. The birds return each fall to the same patch. Kolea spend nine months in Hawaii, but by late April, they form large flocks and head north, over the Pacific Ocean to, as…

In the American West, there are two species of phoebe that share the same expansive country. But they occupy different habitats. The Say’s Phoebe prefers dry, open country ranging from tundra to desert. This Black Phoebe is a close cousin to the Say’s. But it is nearly always hunting…

Ever wonder how the avian idiom, “A little bird told me,” came about? The consensus is that the saying springs from the Old Testament of the Bible -- a maxim from Ecclesiastes. By the mid-16th century, the “little bird” showed up in collections of proverbs. In 1711, the satirist Jonathan…

In late July, the Great Horned Owl chicks that we have been following are four and a half months old, and must fend for themselves much of the time. The young birds continue to learn valuable lessons by watching the adults hunt. Their first hunting forays were clumsy. But by late July…

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…

As an old tale goes, after the eagle was chosen for national emblem, Benjamin Franklin questioned the choice. In a letter to his daughter regarding a medal created by the Society of the Cincinnati, he wrote wrily: "The Bald Eagle is too lazy to fish for himself; when the Osprey has taken a…

Every spring and summer, birders go in search of the superbly colorful birds that come back to the temperate US from tropical regions — including the Painted Bunting. It just doesn’t seem possible that one bird could pack so much visual impact onto a body that’s only slightly larger than a…

In July, the female Rufous Hummingbird has fledged her first two nestlings and is just about to fledge another. The chick is now as big as its mother, making the walls of the walnut-sized nest bulge outwards at maximum capacity. It takes about 40 days to fledge each brood, from egg-laying…

These days we're hearing the song of the Olive-sided Flycatcher less often. Clear-cutting and fire suppression in forests, along with acid rain, has reduced its available habitat. Pesticides affect the supply of food. American Bird Conservancy has named it a priority species for…

In 1987, when Project FeederWatch began, Evening Grosbeaks were among the most common birds at birdfeeders during the Northeast winter. Now they're completely absent in many of those same areas. In the West, too, they're showing up in reduced numbers. Why have so many Evening Grosbeaks…