Migration: Many bird species migrate to a cooler climate for reproducing and summer feeding, and then return to a warmer climate for the winter.
(Many bird species; migrate; to a cooler climate for reproducing and summer feeding) (Many bird species; return; to a warmer climate for the winter; T:then)
Many bird species Many bird species
migrate return
to a cooler climate for reproducing and summer feeding
to a warmer climate for the winter T:then