How ‘positive’ stress could improve the welfare of zoo animals

Pelicans have resided in St James's Park, London, for 360 years. But the current flock has been a summer sensation because of the first chicks to hatch in the park's history.

Pelicans have resided in St James’s Park, London for 360 years. But the current flock have been a summer sensation due to the first hatching of chicks in the park’s history. Pelican breeding in zoos is demanding for these birds, because the right environmental and social…