Migratory status and movements of the portuguese mallard (Anas platyrhynchos)

Fabião, António; Rodrigues, D.J.C.; Figueiredo, M.E.; Tenreiro, P.J.

http://hdl.handle.net/10400.5/1361

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Abstract(s)

Results from recoveries, recaptures and resightings indicated a resident character of the portuguese mallard populations. Some winter migration may reach the studied areas but movements from the summer-ringed birds showed mostly dispersion and abmigration, although some were as long as 3580 km long until Russia. Frequent movements between local portuguese mallard populations resulted from dispersion.