Wednesday, March 18, 2015

Connecticut Warbler

The Connecticut is another elusive North American warbler. The broad white eye-ring makes for a striking field-mark. Unlike the Mourning Warbler of the last post, this species does not specialize in secondary growth situations, preferring, instead, bogs and deciduous forests in central Canada and northern Minnesota, Wisconsin, and Michigan.

Connecticut Warblers winter in South America. Unlike most other warblers, this species migrates by different seasonal routes. Spring birds migrate up the Mississippi Valley. In the fall, they fly east, across Canada, and then south along the Atlantic coast. The two routes overlap only near the breeding range. Note, however, that some individuals do not obey these routes, but are the exception that make the rule.

The famous ornithologist Alexander Wilson discovered this warbler in Connecticut in the fall of 1812. The species does not breed and is not a very common migrant in Connecticut. In any event, its secretive habits and remote habitat kept ornithologists from describing its nest for the next 70 years. Recent genetic research indicates that the similar appearing MacGillivray’s and Mourning warblers are more closely related to Common Yellowthroats and are not closely related to Connecticuts (Pitocchelli et al. 2012).

No comments:

Post a Comment