After a winter ice storm, 25 parrots are found sheltering in a tool shed. Ana traps the parrots, weighs them (average weight = 36 grams) and then feeds them. The next morning she find that 6 of the parrots have died. She weighs the dead ones (average weight = 20 grams) and the remaining parrots (average weight = 44 grams) She continues to feed the remaining parrots. In spring time, the parrots nest and have a total of 35 offspring. She keeps the offspring and releases the adults. The next winter she weighs the 35 parrots she kept and find that their average weight is 38 grams. What was the parrots response to selection (R)?
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