New research from CU Boulder sheds light on the cognitive functions of male ‘green parakeets’ or budgerigars On PetSmart’s website and in stores, the vibrant green, yellow, blue and white budgerigar, ...

Add Yahoo as a preferred source to see more of our stories on Google. Budgerigars display their vitality through lively social behavior, vigorous preening, and vibrant colors—all of which contribute ...

Think about yawning. Yawn yawn yawn... yawn. Have you yawned yet? If so, it's probably because you come from a social species. Contagious yawning, unlike spontaneous yawning (the purpose of which ...