22Axel-Tschentscher22-CC-BY-SA-4.0-https-creativecommons.orglicensesby-sa4.0-via-Wikimedia-Commons-Southern_Yellow-Billed_Hornbill_Beak_2019-07-25

1024 × 683 Desert Birds are Marvels of Adaptation
Southern Yellow-bill Hornbill are among the desert birds we see on our Namibia tours.

Southern Yellow-billed Hornbills can selectively radiate heat by vasodilating their bills – like a radiator. Photo Credit: Axel-Tschentscher via Wikimedia Commons.

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