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A hectare of urban trees is worthwhile for birds

Black throated blue warbler.  Source: Wiki Commons / mdf

Landscape ecologists Stephen Matthews and Paul Rodewald of the Ohio State University found that even a small patch of urban trees, like a hectare-large arboretum, provides valuable stopover habitat for migratory birds, though the authors noted that larger, contiguous patches of tree cover are better.  Read more at the BBC News Science & Environment website.

[Hat tip: The Metropolitan Field Guide]