Signs of Spring: The Latest CUBs Challenge!

On Saturday, Celebrate Urban Birds started its latest Challenge, called Signs of Spring, to welcome the (in many cases impending) return of sunnier days, greener grasses, and most importantly, migratory birds. For those of you wondering what ever happened with our Fascinating Feathers Challenge from the holiday season, check out this post.

Photo © Cornell Lab. Individual photos by T. Grange, V. DuBowy, P. Siegert, and Z. Boles.

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