The first Portuguese Atlas of Winter and Migratory Birds will be published
in 2017 and was innovative in including the post-nuptial migratory period and data
from ringing stations. The standard methodology was identical in both seasons and
based on counting birds during a 30 min walk in each of six non-adjacent tetrads
(2×2 km) within a 10×10 km UTM square. Additional records were also included as
well as data from 26 ringing stations working only during the migratory season. It
was possible to cover around 60% of the territory during the migration period and
ca. 80% in winter. Despite some limitations of the project like short time for field
work (only 2 consecutive winters and migratory seasons), results are very positive
and set up a milestone for future initiatives.O projecto foi patrocinado pela Fundação EDP
