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Peterson Field Guide to Birds of Northern Central America: A Book Review

10,000 Birds

In the Peterson field guide tradition, text and range maps are on the left and illustrations are on the right (though, unlike the tradition Peterson Field Guide to Birds of North America there are no arrows pointing to field marks). These are listed in a table, which also specifies slope and geographic region (but not country).

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The Sibley Guide to Birds, Second Edition: A Review of an Iconic Guide in a New Edition

10,000 Birds

In Sibley Two, the in-flight images literally fly across the page in slight diagonals, with the full-bodied images are presented below in a parallel order (meaning we see the same bird–fresh juvenile, worn juvenile, 1st year, Adult breeding, Adult nonbreeding–in the same part of the page for each species).