Below is a chance to test your knowledge of bird size, by selecting the heavier species in each of five pairs of birds. Weight, or apparent bulk, is one of the key factors in our impressions of overall size, and it’s helpful to think about it explicitly. Watch the birds at your bird feeder or your local patch, paying attention to how they move, how stable they are in the wind, how a perch moves under them, etc. to get a sense of weight.
Bird Sizes: Weights 1
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Eastern or Western Wood-Pewee
Eastern or Spotted Towhee
Black-capped or Mountain Chickadee