Orchard Oriole Range Map The Orchard Oriole breeds from Manitoba, Wisconsin, Michigan, Ontario, New York and central New England south to southern United States and west to Dakotas, Nebraska, Colorado and Texas. The Orchard Oriole winters in tropics.

Nests form a deep, hanging cup, although not as pendulous as those of Baltimore Orioles (I. Galbula), and are invariably woven of grass fibers. They are usually hidden within dense foliage, often in a dense cluster of trees. In the South, nests are frequently located within clumps of Spanish moss. Sometimes Orchard Orioles nest near Eastern Kingbirds whose aggressive defense of their nesting territory also benefits neighboring birds.

The male Orchard Oriole sings more to attract a mate than to defend territory. They are only weakly territorial and defend just a very small area around the nest. One song type is short, lasting approximately two seconds, and sounds similar to the song of a Purple Finch or House Finch. A second song type is longer, lasting three to five seconds, and consists of clearer, robin-like whistles, ending in a distinctive down-slurred note.

The young leave the nest 11 to 14 days after hatching. Once fledged, the brood may disperse, the parents caring for groups of fledglings separately. As soon as fledglings are independent enough to care for themselves, Orchard Orioles begin moving south, as early as mid-July. During migration they may be found in a wide variety of open habitats, but avoiding coniferous woodlands and forests with closed canopies. Unlike most songbirds, which undergo a molt before leaving the breeding grounds, molt is suppressed in Orchard Orioles until they arrive at their tropical lowland winter home. Once there, they forage and roost in flocks that can number in the hundreds. While in the North, they feed primarily on insects; in winter nectar, flowers and fruit are important to their diet.

Orchard Orioles are comparatively small orioles, only six to seven inches in length (compared to Baltimore Orioles, which are 8 ¼ inches). Males have a color pattern superficially similar to that of the Baltimore Oriole except that they are deep chestnut (the only icterid that is largely chestnut) rather than orange on the underparts and rump. The head, back, and tail are black. There is a chestnut "epaulet" on the shoulder, and wings are black with a single broad white wingbar and white edges on the flight feathers.

Adult females have olive-green upperparts and yellowish underparts. There are two white wingbars. First summer males are similar to females but have a black bib and face. Some show a variable amount of chestnut feathers on the breast. First summer males sing and may mate successfully.

While adult male Orchard Orioles are distinctive, females may be mistaken for a number of birds, including warblers. They are most similar to female Hooded Orioles, a larger, southwestern species with longer tail; longer, more curved bill; and gray rather than olive tones on the back.

The Fuerte's Oriole is currently considered conspecific with Orchard Oriole. It occurs in coastal and edge habitats along the Mexican Gulf coast in the breeding season and winters on the Pacific coast. It has been reported from south Texas. In male Fuertes Orioles, the chestnut color is replaced by ochre, and females are somewhat paler.

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