Nest building along the Little Buffalo River, I caught this guy stripping bark for a nest. He is brightly colored but easily overlooked. A bird of shrubland and old fields, the Blue-winged Warbler expanded its breeding grounds northward throughout the 20th century.
Adult Description
Small songbird.
Head and underparts yellow.
Black line through eye.
Wings blue-gray with two white wingbars.
Immature Description
Similar in appearance, but duller than adults.
Nest Description
Open cup of grasses, bark and dead leaves. Leaves may form cap over eggs. Usually on or near ground.
Habitat
Early to midsuccession habitats, especially abandoned farmland and forest clearings.
Breeds at forest/field edges, often shaded by large trees.
Photos taken with my Canon 50D and the same Canon 400 f/5.6 Lens I have been using lately:
Life and Wildlife along the Little Buffalo River 
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