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Breeding Bird Atlas Explorer
BBA Explorer (this website) offers data from published BBAs and interim data from ongoing BBAs in North America in a uniform system. It allows users to learn about the methods used in each atlas project, to get species and block information for each project, and to view the results by species,...
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Bird
Birds (class Aves) are winged, bipedal, endothermic (warm-blooded), vertebrate animals that lay eggs. There are around 10,000 living species, making them the most numerous tetrapod vertebrates. They inhabit ecosystems across the globe, from the...
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Breeding Bird Atlas
Breeding Bird Atlases are population survey projects that are designed
to cover large areas using a grid-based system, and are generally organized at the state or provincial
level. Breeding evidence for each species is categorized as ...
