Great Moments In Science - With Dr Karl Kruszelnicki
The colour of bird poo
- Author: Vários
- Narrator: Vários
- Publisher: Podcast
- Duration: 0:06:34
- More information
Informações:
Synopsis
Bird poo is usually coloured white—because of the way birds excrete excess nitrogen. But the poo can sometimes be a different colour—because of their diet. Creatures have evolved three main ways of getting rid of excess nitrogen.
