It's hard to figure the cash value of a red-eyed vireo or grizzly bear.

Summer residents include: red-eyed vireo, least flycatcher and northern oriole.

These birds sometimes imitate the calls of Red-eyed Vireos.

Some individuals are difficult to separate, even in the hand, from the similar Red-eyed Vireo, with which it is sometimes considered conspecific.

Red-eyed Vireos are common tree top nesters.

The female does most of the incubation, spelled by the male except in the Red-eyed Vireo complex.

I got that from the red-eyed vireo."

This bird can be confused with the Red-eyed Vireo, which is larger, moves more deliberately and sings almost constantly.

Especially for vireos such the red-eyed vireo, it appears to be a very important food at least locally and when ripe fruit are abundant.

These trees attract a different set of birds including the American redstart, Louisiana waterthrush and red-eyed vireo.

She is recognized for her study of the Red-eyed Vireo, which identified the songbird as capable of producing 22,197 distinct calls in a single day.

There are also a large number of birds in this forest; frequently seen are red-eyed vireos, hermit thrushes, and ovenbirds.

"We're seeing fewer scarlet tanagers and red-eyed vireos, warblers and birds that prefer the forest cover," he said.

The song is a three-syllable whip, Tom Kelly, more abrupt than that of Red-eyed Vireo.

Dr. Whelan said, some 30 of those species stay on to nest, including red-eyed vireos, American robins and scarlet tanagers.

Rare American passerines include Red-eyed Vireo and Blackpoll Warbler.

The deciduous forests provide habitats for songbirds, such as Scarlet Tanager and Red-eyed Vireo.

This species is similar to Red-eyed Vireo, but is duller and browner above, and is best distinguished by the black whisker mark.

This includes, for instance, the ovenbird, red-eyed vireo, scarlet tanager, great crested flycatcher, hooded warbler and ruby-throated hummingbird.

Some birds, like the Ruby-crowned Kinglet and Red-eyed Vireo of North America use a combination of these tactics.

For instance, songbirds like the red-eyed vireo, the wood thrush and the prothonotary warbler are now being pushed aside by raucous bluejays and parasitic cowbirds.

The aspen-birch community supports ovenbirds, red-eyed vireos, veeries, ruffed grouse, black-capped chickadees, least flycatchers, and black-throated green warblers.

Other non-game birds found in abundance include the cardinal, Carolina wren, wood thrush, summer tanager, red-eyed vireo, blue-gray gnatcatcher, and tufted titmouse.

Some key identifiers of a Forest community include the Red-eyed Vireo, Ovenbird, and Large-Flowered Trillium.

During the summer months, Black-Throated and Blue Warblers, Solitary and Red-Eyed Vireos are seen.

The primary song of the Blue-headed Vireo is a simple, slow, monotonous tune that is often confused with the faster Red-eyed Vireo (Vireo olivaceus) song.

Indeed, the Sayaca Tanager will defend richly fruiting A. glandulosa trees against similar-sized birds such as the Blue Dacnis (Dacnis cayana) or the Red-eyed Vireo (Vireo olivaceus).