Plants generally make up a larger part of the bird's diet, especially during autumn migration and in the winter.
Flock size ranges from pairs in breeding season to up to 2,000 birds just before autumn migration.
They are thought to follow broadly similar routes to their autumn migration.
He had been interested in birds since childhood, and joined an expedition to study autumn migration in Norway.
More stopovers are made during their autumn migration.
It has a breeding population of Stone-curlew, and this species also uses the site to gather prior to its autumn migration.
Are they recent arrivals from Norway, or birds which have been around since the autumn migration?
Recent research suggests that British painted ladies do undertake an autumn migration.
It is known as a rest place for many birds during their migrations, particularly the autumn migration.
Their autumn migration can be seen from September to the beginning of November.