BIO101- From Genes To Species: A Primer on Evolution | A Blog Around The Clock, Scientific American Blog Network:

After four insects have been eaten, six remain ? three males and three females. They pair up, mate, lay eggs and die. Each pair lays, let?s say eight eggs, which all hatch, proceed normally through the larval development and become adults. This makes a total of 24 insects in a meadow that can support only ten individuals. At the same time, the bird has laid eggs, the eggs hatched and the hatchlings sometimes come to the meadow to hunt.

Worth the <5mins it takes to read.