Birds

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North America has lost 3 billion birds since 1970

How birds fly — Science Learning Hub

The two main reasons birds get 'divorced', Science

BRPROUD Science: Why do some birds fly in V formation?

Discover 12 Purple Birds (With Pictures and Facts About Each) - AZ Animals

10 Top Friendly Pet Bird Species

Illuminating Birds - The Academy of Natural Sciences of Drexel University

Why Should We Care About Birds? Missouri Department of Conservation

Here's how we proved that tropical birds are more colourful – and why colour helps them survive

10 Essential Facts to Help You Understand Birds

Colorful Birds – Facts, List, Pictures

Welcome To Birds of the World - Bird Diversity at Your Fingertips - Birds of the World

Backyard Birds The Nature Conservancy

Bird of prey, Definition, Characteristics, & Examples