images.library.wisc.eduimages.library.wisc.edu/EcoNatRes/EFacs/PassPigeon/... · and a Peterson...
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images.library.wisc.eduimages.library.wisc.edu/EcoNatRes/EFacs/PassPigeon/... · and a Peterson Field Guide. The following weekend, using binoculars and the field guide, I saw about