I spotted a flock of starlings feeding in our yard one rainy day in September and said, "We have been invaded by starlings. Those are enemies to our bluebirds."
Emily asked if she can leave her school work to look at them. One of her new words is eruption, and I think that was the word she trying to work into her sentence.
When she saw the size of the flock, she exclaimed, "OH! That's a corruption!"
For the sake of our bluebirds, I'll go with corruption!