Winged, furry and buttery

It so happened that each of the inhabitants of the forest hut was busy with their own tasks and helped each other. The winged sparrow brought food from the forest, the furry mouse chopped wood, and the buttery pancake cooked soup and porridge. But as soon as the friends decided to swap jobs - everything went wrong... Can it be any other way, if suddenly you envy another and start looking for an easier job for yourself?
Russian folk tale retold by I. Karnaukova.