A swallow sitting on a rock above a town with two other swallows flying in the sky above. Coloured wood engraving by J. W. Whimper.

Reference:
40301i

Licence: Public Domain Mark

Credit: A swallow sitting on a rock above a town with two other swallows flying in the sky above. Coloured wood engraving by J. W. Whimper. Wellcome Collection. Source: Wellcome Collection.

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