Hornbills join toucans in the cool beak club
![Tockus leucomelas](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/05/051816_ht_hornbillticker_free.jpg?fit=860%2C460&ssl=1)
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