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. 2019 Mar 5;3(2):120–128. doi: 10.1002/evl3.104

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© 2019 The Author(s). Evolution Letters published by Wiley Periodicals, Inc. on behalf of Society for the Study of Evolution (SSE) and European Society for Evolutionary Biology (ESEB).

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Matching coloration of host‐specific feather lice on pigeons. The light‐colored louse, Columbicola wolffhuegeli (left in both insets), parasitizes (A) the Australian pied imperial pigeon, Ducula bicolor. The dark‐colored louse, C. columbae (right in both insets), parasitizes (B) the cosmopolitan rock pigeon, Columba livia. Pigeon photo (A) by Greg Hume (https://commons.wikimedia.org/wiki/File:Pied_Imperial_Pigeon_04.jpg); pigeon photo (B) by Mike Atkinson (reproduced with permission, mikeatkinson.net). Photos of lice by SEB.