THE TERRA wildlife research & ornithology BLOG

Nature, Wildlife, Birds & Migration

Bird Migration — Barn Swallow

The Case of the Sleeping Swallow

The Case of the Sleeping Swallow

Today we take it for granted that birds migrate — maybe we don’t know where, but we know it’s a fact. Until the past couple of hundred years, though, migration was not a given. In fact, for most of history migration was a persistent and largely unsolvable mystery, with dozens of theories that ranged from the likely to the preposterous.

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