Bird Nesting

ornithology

Birds that use mud for nests rely on this abundant material to create stable, insulated cavities that protect eggs and young. By mixing soil with saliva or water, they form cups...

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ornithology

Brown and white speckled bird eggs are produced by many common songbirds, backyard nesters, and cavity nesters across temperate regions. The brown speckles typically appear on a...

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Birds and Wildlife

American robins build open-cup nests in trees, shrubs, or on sheltered surfaces. A typical clutch contains three to five pale blue eggs. After the last egg is laid, incubation b...

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