The dynamic schedule of migration
All these species have distinct passage timings and peaks, and to have an accurate notion of the migration dynamics of Sagres, several visits along the season are required. The festival’s dates, in early October, are strategically scheduled to allow you to witness a little bit of everything, for is happens as raptor diversity starts to peak, many long-distance seabird migrants are still around, and at that thin turning point where trasaharian passerines are still passing through, although in smaller numbers, and wintering visitors are starting to arrive. But Mother Nature has always the final word.
Keep in mind is that meteorological conditions greatly influence the attendance of migrants to the peninsula. Factors like rain, and especially wind direction and speed both in Sagres and further North and Northeast, condition arrivals and departures, and make each day an unique one. Eastern winds in Southern Iberian per example can blow migrants from Gibraltar, however in rainy and windy days in Sagres, bird abundance drops, although diversity remains high. When the weather clears after a few poor days, bird activity peaks, to the birdwatchers delight