In the mountains of Eurasia, pikas often share their burrows with finches and other small animals for extra warmth.
In the mountains of Eurasia, pikas often share their burrows with finches and other small animals for extra warmth.
In the mountains of Eurasia, pikas often share their burrows with finches and other small animals for extra warmth.
When the weather is hot, zebra finches in Australia sing to their eggs - and these "incubation calls" change the ...