Male brings food to female during incubation period. Look For Swainson's thrush was once called the olive-backed thrush. Swainson’s Thrush is a common species, but has been gradually declining across its range; experiencing a loss of about 38% between 1966 and 2014, according to … American robin. Eastern bluebird. Like the Hermit Thrush, it is a furtive, ground-dwelling bird of the northern forests.
This population was formerly called the Olive-backed Thrush. Swainson's Thrush: Medium-sized thrush (swainsoni), with dull olive-brown or olive-gray upperparts, pale buff eye-ring, dark moustache stripe, and brown-spotted buff throat and breast, and white belly.
Bicknell's thrush. Gray catbird. Although they tend to stay out of sight, the patient birder eventually can see them well enough to discern the bold buffy eye-rings that give these birds their alert or startled look. Swainson’s Thrush also gives its distinctive water-drip call quite frequently. •Nest with viable egg(s).
Eggs: The russet-backed thrush lays three to five eggs to a set, the commonest number being three or four; some say that three is the commonest number and some say four. •Adults attending young (adults carrying fecal sacs or food for young).
Ian Cruickshank Kelly Colgan Azar. Curve-billed thrasher.
Once you get eyes on a candidate, check the face for that distinctive buffy-spectacled look. In winter, the birds separate out somewhat by 2 populations. Across its boreal and western breeding range, its ethereal, flutelike song is one of the most prominent natural sounds. Eggs. California thrasher.
Bendire's thrasher. Like the Swainson's Thrush and Swainson's Hawk, this warbler was named for William Swainson, an English ornithologist and artist. range, Swainson’s Thrush eggs are generally laid from mid-April to late June, with latter dates presumed to be renests (Evans Mack and Yong 2000). Gray-cheeked thrush. Crissal thrasher. Flies in a swift, direct flight with rapid wing beats. •Fledgling(s) (young away from the nest but without adult-sized flight feathers). Brown thrasher. This nest was located in deciduous riparian growth adjacent to ponderosa pines, and contained two eggs and an “advanced fledging” nestling on 12 Aug, but the nestling was gone and the two remaining eggs were cold on 15 Aug.
The eggs are practically indistinguishable from those of the olive-backed thrush, which the reader will find described under that subspecies. Swainson's Thrush: Medium-sized thrush (swainsoni), with dull olive-brown or olive-gray upperparts, pale buff eye-ring, dark moustache stripe, and brown-spotted buff throat and breast, and white belly. During the peak of migration, Swainson's Thrushes are often very common in woodlots and parks, lurking in the thickets, slipping into fruiting trees to pluck berries.