Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 114.

The Mountains [1], 06/07/1732, ¶581:

The little ptarmigan, woodcock-coloured but with white wings, had chicks. I caught one of them and its mother ran right up to me and I could have caught her too. She ran round me continuously and I could have killed her a 100 times over without difficulty, had I not respected her maternal affection and taken care not to leave the small chicks unprotected in their youth. So I restored her son to her.