The Connecticut Warbler is one of the most sought-after and frustrating warblers in the region — a skulking, ground-loving bird with a complete gray hood (brownish in females), a bold white eye-ring that gives it a wide-eyed "spectacled" look, and olive upperparts over yellow underparts. It walks rather than hops as it forages on the ground in dense cover, and it is so retiring and easily overlooked that even experienced birders may go years between good views. Its loud, ringing, explosive song is often the only sign of a bird that refuses to show itself.
True to the pattern, the name comes from a migration specimen taken in Connecticut, where the species does not breed. It nests in spruce and tamarack bogs and moist poplar woods across the far north, reaching into parts of the Upper Peninsula, and it passes through the rest of Michigan as an uncommon and secretive migrant, moving north late in spring and south in fall through dense thickets. Its combination of striking looks, elusive habits, and a distinctive migration route makes seeing a Connecticut Warbler a memorable achievement.
Forages on and near the ground in dense cover, walking as it gleans insects, caterpillars, and spiders from the leaf litter and low vegetation, and takes berries in late summer and fall. Its ground-walking, skulking foraging style is unusual among warblers and adds to its reputation for being hard to see.
It is a skulking, ground-loving warbler that walks through dense low cover and rarely comes into the open, so even singing birds are hard to glimpse. Many birders locate it only by its loud, ringing song.
No. It was named from a migration specimen collected there and does not nest in the state. It actually breeds in spruce and tamarack bogs and poplar woods far to the north, including parts of the Upper Peninsula.
The Connecticut Warbler has a complete, bold white eye-ring and walks on the ground, while the Mourning Warbler usually lacks a full eye-ring (or shows only broken arcs) and hops. The Connecticut also has a fuller, grayer hood.
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