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. 2022 Mar 2;12(5):628. doi: 10.3390/ani12050628

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Illegal harvest and trade in wandering whistling duck Dendrocygna arcuata (June 2005 to April 2007). Left: Data from 23 monthly surveys of the premises of wholesale traders in East Kalimantan and from verbal reports of the number of ducks traded (both expressed on logarithmic scales) showing high levels of agreement. Right: Number of duck harvesters active in each month on Lake Jempang, Lake Semayang, and Lake Melintang (Mean + SEM) (bars) and the number of wandering whistling duck observed on these lakes during surveys (continuous line).