Order: Charadriiformes Family: Stercorariidae Status: Vagrant to Madeira
Wingspan: 125 - 135 cm (Beaman & Madge, 2011)
Total length: 46 - 51 cm (Beaman & Madge, 2011)
Weight: 550 - 900 g (Hume, 2002)
Madeira local status by Correia-Fagundes et al, 2021: Seasonal
Madeira local status by Romano et al, 2010: Seasonal
Madeira local status by Zino et al, 1995: Exceptional
Conservation status by the IUCN Red List Categories, 2013: Least Concern ver 3.1
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