Climate change may be shrinking tropical birds
Even a subtle decrease in size could help animals stay cooler, researchers suspect
![a collared puffbird perched on a human hand](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/11/111021_jl_shrinking-birds_feat.jpg?fit=1030%2C580&ssl=1)
Many tropical birds, such as this collared puffbird (Bucco capensis), are shrinking in size. The change may help the birds stay cool in a warming climate.
V. Jirinec