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Canada protects certain families of birds. This was a pledge made under the Migratory Birds Convention, which was signed by the United Kingdom, on behalf of Canada, and the United States in 1916. Any ...

A line drawing of the Internet Archive headquarters building façade. An illustration of a magnifying glass. An illustration of a magnifying glass.

The family Aegithalidae contains only four genera: long-tailed tits Aegithalos (four species), tit-warblers Leptopoecile (two species), Bushtit Psaltriparus minimus and Pygmy Tit Psaltria exilis. This ...