The white-throated sparrow is a passerine bird of the New World sparrow family Passerellidae. It breeds in northern North America and winters in the southern United States.
The dark-eyed junco is a species of junco, a group of small, grayish New World sparrows. The species is common across much of temperate North America and in summer it ranges far into the Arctic. It is a variable species, much like the related fox sparrow, and its systematics are still not completely resolved.
The Savannah sparrow is a small New World sparrow that is the only member of the genus Passerculus. It is a widespread and abundant species that occupies open grassland habitats in North America.
The swamp sparrow is a medium-sized New World sparrow related to the song sparrow.
The black-throated gray warbler or black-throated grey warbler is a passerine bird of the New World warbler family Parulidae. It is 13 cm (5.1 in) long and has gray and white plumage with black markings. The male has the bold black throat of its name, and black stripes on its head, as well as black streaks on its flanks; the female is a paler version of the male, with a white throat and less distinct black markings on the flanks and wings. It breeds in western North America from British Columbia to New Mexico, and winters in Mexico and the southwestern United States. The habitats it prefers are coniferous and mixed forests and scrubland, especially those with pinyon pines, junipers, sagebrush, and oaks. Its nest is an open cup of plant fibers lined with feathers, built a few metres from the ground in the branches of a tree or shrub. Three to five eggs are laid, and young are fed by both parents. Common in its breeding range, it does not seem to be seriously threatened by human activities, unlike many migratory warblers.
Brewer's sparrow is a small, slim species of American sparrow in the family Passerellidae. This bird was named after the ornithologist Thomas Mayo Brewer.
Zugunruhe is the experience of migratory restlessness.
The golden-crowned sparrow is a large New World sparrow found in the western part of North America.
Harris's sparrow is a large sparrow. Their breeding habitat is the north part of central Canada, making it Canada's only endemic breeding bird. In the winter they migrate to the Great Plains states of the United States, from southern South Dakota to central Texas. The common name of this species commemorates the American amateur ornithologist Edward Harris (1799–1863).
The black-chinned sparrow is a small bird in the genus Spizella, in the New World sparrow family Passerellidae. It is found in the southwestern United States and throughout much of Mexico north of the Isthmus of Tehuantepec; most populations in the US migrate south after breeding while those in Mexico are resident. It is a slim, long-tailed bird, primarily gray with a reddish-brown back streaked with black, brown wings and tail, a pink beak, and brownish legs and feet. In the breeding season, the male shows black on his throat, chin, and the front of his face. Females, youngsters and nonbreeding males show little or no black in these areas. An unobtrusive bird, it spends much of its time foraging slowly along the ground, either alone or in small groups, sometimes mixing with other Spizella species. It is an omnivore, feeding primarily on seeds during the winter and insects during the summer. It builds a cup-shaped nest of grasses, rootlets, or plant fibers, into which the female lays 2–5 pale blue eggs. The female does most or all of the egg incubation, but both parents feed the hatched nestlings.
The silver-throated tanager is a species of passerine bird in the tanager family Thraupidae. It is found in Costa Rica, Panama, Colombia, Ecuador, and northeastern Peru. It inhabits mossy forests, montane evergreen forests, tropical lowland evergreen forests and forest edges, along with tall secondary forests and disturbed habitat with remnant trees and forest. It is 13 centimetres (5.1 in) long and weighs 22 grams (0.78 oz) on average, and shows slight sexual dimorphism, with duller female plumage. Adult males are mainly bright yellow, with a silvery-white throat bordered above with a black stripe on the cheeks, black streaking on the back, and green edges to the wings and tail. Juveniles are duller and greener.
The white-throated magpie-jay is a large Central American species of magpie-jay. It ranges in Pacific-slope thorn forest from Jalisco, Mexico, to Guanacaste, Costa Rica. Magpie-jays are noisy, gregarious birds, often traveling in easy-to-find flocks, mobbing their observers.
The buffy-crowned wood partridge is a bird species in the family Odontophoridae, the New World quail. It is found in Mexico, Guatemala, Honduras, El Salvador, Costa Rica and Nicaragua.
The tepui foliage-gleaner, also known as the white-throated foliage-gleaner, is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Brazil, Guyana and Venezuela.
The flammulated flycatcher is a species of bird in the family Tyrannidae. It was formerly placed in the monotypic genus Deltarhynchus but was moved to the genus Ramphotrigon based on genetic analysis. It is endemic to the dry deciduous forest, arid thorn forest, and scrubby woodland of Mexico’s Pacific coast. The flycatcher is an olive to gray-brown bird with a streaked, pale gray chest, white throat, black bill, dark gray feet, and dark brown wings. It is a skulking bird that typically remains hidden in the underbrush. It feeds by gleaning insects off of leaves and twigs that it spots from an exposed perch. The female lays approximately three eggs in a nest made in a shallow tree cavity.
The black-throated spinetail is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is endemic to Venezuela.
The rufous-breasted spinetail is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Belize, El Salvador, Guatemala, Honduras, and Mexico.
Barbara Blanchard DeWolfe was an American ornithologist. She graduated with an undergrad in 1933 and obtained her PhD in 1939 both from UC Berkeley. She taught for several years and pioneered studies of avian life history and physiology on the white-crowned sparrow. Despite facing discrimination because she was a woman, she went on to publish over 30 works and was the 1995 recipient of the Cooper Ornithological Society’s Loye and Alden Miller Research Award, which is given in recognition of lifetime achievement in ornithological research.
Dr. Elizabeth Derryberry is an associate professor specializing in ornithology, in the Department of Ecology and Environmental Biology in the College of Arts and Sciences at the University of Tennessee.
James Roger King (1927–1991) was an American ornithologist, specializing in avian physiology.
