How did the average and range of beak size differ between birds that survived the drought and birds that dies?

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."