Please choose the correct answer to the question: European starlings are birds that take over the nests of other birds. When they move into an area, starlings reproduce quickly. Taking over the nests of other birds most likely increases the number of starlings by helping them to do what?

Answer1: attract a better mate Answer2: compete for resources Answer3: migrate during the winter Answer4: blend in with the environment

Answer format: answer1/answer2/answer3/answer4