Further inland, wetlands such as A Terra Chá, the Abegondo-Cecebre reservoir and the Vilagudín e Vilasenín reservoir remain good places to watch waterbirds such as Anatidae, grey herons and great crested grebes.
However, small and subtle changes are underway. A visit to the coastline, particularly the Cíes and Ons islands in Illas Atlánticas de Galicia Maritime Terrestrial National Park,, coupled with a little skill and luck, provides a chance to see to the first european shags nesting on steep cliffs and coastal caves. The Costa da Morte and Costa de Dexo are also good locations to see these species.
From the middle of the month, wintering waterbirds begin to return to their breeding groundsin northern Europe and their number is drastically reduced. However, on the coast the numbers are offset by migratory species on their way north. Capes, beaches and coastal wetlands begin to host lesser black-backed gulls, which stop briefly to sleep or eat on beaches, and northern gannetst.
Another change is that the first migratory birds very timidly begin to arrive to nest in Galicia. A very early riser, the barn swallow is common and visible in small numbers at the end of the month in inland areas.