Spider Silk — Duct Tape for Bird Nests

The spider’s web is an intricate piece of precision engineering. Made from large proteins, it’s sticky, stretchy, and tough. So it’s no surprise that many small birds — including this Anna’s Hummingbird — make a point of collecting strands of spider silk to use in nest construction. Spider silk not only acts as a glue, holding the nest together, but it’s flexible enough to accommodate the growing bodies of nestlings. And it’s resilient enough to withstand the bustle of raising those hungry babies.

More info and transcript at BirdNote.org.

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