Named for its place of discovery, this species is only an uncommon migrant in Connecticut. It seeks out similar habitat during migration, when it is found in wet thickets, overgrown ditches, swamps, cloud forest, alpine grassland, and brushy pastures. It's "similar in pitch to the Kentucky warbler and the Ovenbird". In migration, may forage in small flocks with others of its kind. breeding grounds, © Andy Reago & Chrissy McClarren/Wikimedia Commons (CC 2.0), Find out why and see all selected boreal birds ». However, recent studies have found that these three warblers were more closely related to the yellowthroats which belong to the genus Geothlypis. Other aspects of the species' diet and feeding behavior, like much of its ecology, remain unstudied. In migration, found in undergrowth of lowland woods or in dense thickets in meadows. Nesting begins in late May in the southern part of its range and extends into August; there is only one brood per year. Couples have one brood per season. A sluggish and secretive warbler, it spends most of its time hidden low in woods and dense thickets, walking on the ground with slow and deliberate steps. Help power unparalleled conservation work for birds across the Americas, Stay informed on important news about birds and their habitats, Receive reduced or free admission across our network of centers and sanctuaries, Access a free guide of more than 800 species of North American birds, Discover the impacts of climate change on birds and their habitats, Learn more about the birds you love through audio clips, stunning photography, and in-depth text. It also will join other species, such as Blackpoll warblers, to feed during the fall. Usually 4-5. (1999). Most classification systems consider the genus to be monophyletic. [7] The nest is an open cup well-concealed in moss or a clump of grass. Simon and Schuster, New York. Wood warbler's world. 1997. When it comes to parental care, both the male and the female will feed the juvenile. They forage on the ground, picking among dead leaves, or hop along branches. 300+ species, billions of birds rely on A loud, ringing beecher-beecher-beecher-beecher or chippy-chipper-chippy-chipper. Poplar bluffs, muskeg, mixed woods near water; in migration, undergrowth. They are fairly elusive birds, but it appears that their numbers may be declining due to loss of winter habitat. The Connecticut Warbler is believed to be primarily insectivorous year-round, though it does eat some seeds and berries, at least seasonally. It forages on the ground and along low branches, occasionally higher in trees. Such behavior often renders them difficult to see well. Little is known about it outside of the breeding season as to this date, less than 25,000 individuals have been banded. What little information is available on the species' breeding ecology suggests that it is similar in most regards to that of its closest relatives, the MacGillivray's (O. tolmiei) and Mourning (O. philadelphia) Warblers. Let us send you the latest in bird and conservation news. (2003). The bird is seldom seen except by observers who know where to look. This kind of migration also demands large reserves of fuel and this is why fat Connecticut warblers can be found on the East coast in early fall. This is an in-depth boreal species profile. Aspen logging on their breeding range (i.e. Reported to feed its young on green caterpillars, also seen eating spiders, snails; may sometimes eat seeds and raspberries. Venier LA, McKenney DW, Wang Y & McKee J. The winter range, though poorly known, appears to lie entirely within the western Amazon Basin. Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists' Union. 320 (A. Poole and F. Gill, Eds.). One of the main causes of mortality during migration is the collision of individuals into man-made structures. The presence of power lines is also a danger to the Connecticut warbler: studies show that the presence of power lines reduces population densities in areas where they are present. Danz NP, Lind J, Hanowski J, Niemi G & Jones MT. BC) and the application of pesticides gets rids of nesting locations. Overwhelmed and Understaffed, Our National Wildlife Refuges Need Help. Recently, the use of small tracking devices have enabled scientists to gather more data on the warbler's migration routes. They have discovered some individuals fly over open water like the Blackpoll warbler. How it got there was long a mystery until a Manitoba-based research team tracked individuals making an over-ocean flight from the U.S. Atlantic coast down to the Greater Antilles and beyond. Spread the word. Both parents feed their young caterpillars, larvae, moth and berries. [8], Courtship begins right after the migrants arrive on their breeding grounds. In western Canada nests on dry ridges, and in open poplar or aspen stands. Birding content provided by National Wildlife Federation/eNature, with support from Ducks Unlimited/The Pew Charitable Trusts. Has conspicuous, unbroken white eye ring. Zoom in to see how this species’s current range will shift, expand, and contract under increased global temperatures. The nestling period is unknown; both parents feed the young. Fledglings are observed in late July and at the latest at the end of August. Choose a temperature scenario below to see which threats will affect this species as warming increases. 2003. Details of diet not well studied. McKinnon, E. A., C. Artuso, and O.P. Apparently only rarely parasitized by cowbirds. [9], The Connecticut warbler walks on the ground to forage insects and other sources of food. Both parents apparently care for young; age at which they leave the nest is not well known. It tends to migrate late in spring and early in fall, missing the peak of birding activity. Nest: Hidden in sphagnum moss hummock. [7] When it comes to sociability, the Connecticut warbler is a solitary species; however, groups of about twenty-five will come together in the fall before migration. They are "skulking" birds that usually spend their time foraging within dense, low vegetation. Northward migration is relatively late, most individuals traversing the West Indies back to Florida; they then head northwest and up the Mississippi Valley, arriving on the breeding grounds in mid-to late May. Its tail bobs up and down, which is reminiscent of wren and sandpiper behaviour. [11] There, they make a minimum of 48 hour stop (it usually lasts 5–7 days) in the Caribbean. Nest is an open cup, constructed of leaves, grass, and bark strips, or sometimes a simple hollow in moss lined with finer stems of grass. Harrison, H.H. Collisions often occur against transparent glass panes, through which individuals can see vegetation and light. Specimens have been observed in Colombia (north & southeast), Venezuela (northeast & interior), Guyana (at the border), and Peru (South). The Connecticut warbler (Oporornis agilis) is a small songbird of the New World warbler family. Speak out against the Yazoo Backwater Pumps which would drain 200,000 acres of crucial bird habitat. Due to its restricted range, inaccessible and insect-rich breeding habitat, and secretive nature, the poorly named Connecticut Warbler is one of the least known birds in North America and remains on many birders' wish lists. [13] Connecticut warblers are on the IUCN red list as a species of Least Concern. [2][3] Connecticut warblers weigh 10 g (0.35 oz) when they fledge, attaining an average weight of around 15 g (0.53 oz) as adults. [11] These birds migrate to the Amazon Basin in South America in winter. The same climate change-driven threats that put birds at risk will affect other wildlife and people, too. For many birders, the Connecticut Warbler remains a little-known and mysterious bird. Connecticut warblers undertake different migratory routes in spring and in fall, an atypical behavior.