Hornbills join toucans in the cool beak club

Southern yellow-billed hornbills (Tockus leucomelas) lose heat through their beaks to keep cool in the Kalahari Desert of South Africa.
Tanja van de Ven
Southern yellow-billed hornbills (Tockus leucomelas) lose heat through their beaks to keep cool in the Kalahari Desert of South Africa.
Tanja van de Ven