Migrations in the Greater Côa Valley, a landscape in motion
Migrations are one of the oldest processes in the animal world, being seasonal movements from one place to another. There are different reasons why animals migrate. For example, some species migrate to take advantage of seasonal availability of different food sources, others to escape the harsh climate for part of the year, or for breeding reasons. In the Greater Côa Valley there were, there are, and there could be again several migrations of birds, fish and mammals.