Northern Parula
Looking forward to seeing these in a few weeks.
Setophaga americana
Northern Parulas have an odd break in their breeding range. They breed from Florida north to the boreal forest of Canada, but skip parts of Iowa, Wisconsin, Michigan, and some states in the Northeast. The reason for their absence may have to do with habitat loss and increasing air pollution, which affects the growth of moss on trees that they depend on for nesting.
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