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small, migratory songbird of the New World. Some species nest in the United States, but the majority are tropical. Vireos (also called greenlets) range from 4 to 6 1/2 in. (10.2–16.5 cm) in length; they are greenish above and white or yellowish below and have either stripes above or rings around the eyes. They search methodically through vegetation for insects. Vireos are known for their loud, persistent call and for their cup-shaped nest that is suspended in the fork of a tree limb. American vireos include the red-eyed, white-eyed, warbling, Philadelphia, yellow-throated, and blue-headed, or solitary, vireos. Vireos are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Aves, order Passeriformes, family Vireonidae, genus Vireo.
References in periodicals archive ?
Two foliage gleaning species, red-eyed vireo and Carolina wren were the only species found to have positive associations with either native plants or invertebrate biomass.
Most reports of black-capped vireos south of Sinaloa and Nayarit consist of occasional net captures or detections as part of general avian studies (i.
In short order, we found yellow-throated vireo, ovenbird, and Louisiana waterthrush, and then pushed on to our weirdest stop of the day: the National Zoo.
In vireos most of the fibers from this large muscle originate as a short aponeurosis, but it is inserted from both fibers fleshy and aponeurosis (Orenstein and Barlow (1981).
After I got home, another red-eyed vireo turned up near Land's End, where I had been less than 24 hours previously.
The diminutive least Bell's vireo, an endangered species, can be found darting in and out of the willow thickets.
Separate monographs by these same authors on flycatchers and vireos make no mention of population changes that might explain why Olive-sided and Yellow-bellied Flycatchers were once common in Urbana but recently scarce near Charleston nor why White-eyed Vireo records are numerous here but infrequent during Smith's (1930) Urbana study.
Warblers prefer enduring, closed-canopy forests, while vireos prefer ephemeral, open shrublands.
Red-eyed vireos were more abundant in 3L sites than in heavy use sites (3H and 1H: Table I).
The smaller birds such as the American warblers and vireos, although turning up occasionally on islands off the west coast, rarely get found on the mainland.
Red-Eyed Vireo: Until recent population declines, red-eyed vireos were one of the most common woodland birds in North America.
Complicating the picture, Sealy reported in 1996, is the fact that the smallest egg ejector, the 15-gram Eastern warbling vireo, routinely punctures cowbird eggs and heaves the pieces out of the nest, whereas warbling vireos west of the Great Plains generally do not.