European pied flycatcher
Sometimes a species may react in one of the other two ways, by moving or by adapting, and yet find that its efforts do not save it from extinction. While not yet extinct, the European pied flycatcher, a small insectivorous bird that migrates to western Europe from Africa each spring, has declined to 10% of its former population. This has occurred at the same time as a main food source for the young flycatchers, caterpillars, have begun to peak much earlier. Although the birds have also begun to arrive earlier, they have not yet caught up to the peaking of the caterpillars. This individual species may or may not go extinct, but it demonstrates that a species can sometimes begin to move or adapt and yet find itself dying nevertheless (Pimm 2009).