Order: Procellariiformes Family: Hydrobatidae Status: Vagrant to Madeira
Zino’s Petrel Pelagic Expedition - observed twice
A medium to large storm petrel with long and pointed wings and relatively long, forked tail which is normally closed in flight.
This seabird is all brownish-black coloured with no other distinct colours. Only when observed at close range some pale buff upperwing bars and some some white shafts on the base of the primaries are visible.
In the Atlantic it is normally observed singly though often associated with other storm petrels. In Madeira it came to feed on a chum slick with Madeiran storm petrels once and on another occasion the slick was populated with ca. 30 European storm petrels.
Oceanodroma monorhis is a highly offshore seabird, away from its known colonies in NW Pacific and a long-distance migrant. Its a common wintering bird in the West Pacific and Indian Ocean.
In the Northeast Atlantic it might be easily confused with Bulwer’s Petrel, being the Swinhoe’s petrel’s smaller size, forked tail and stronger wing beats jizz the best ways to distinguish it. It can also resemble a dark-rumped form of Leach’s storm-petrel.
Wingspan: 450 - 480 mm (Flood & Ashley, 2011)
Total length: 180 - 210 mm (Flood & Ashley, 2011)
Weight: 38 - 43 g (Flood & Ashley, 2011)
Seasonality in Madeira: only 3 records around Madeira island, late April, early June and late September
Breeding: It was known as breeding seabird from the Pacific Ocean where it starts in April but the increasing records of this species in the Atlantic and the ones caught in Selvagens Islands suggest there might be a breeding colony in the Atlantic
Madeira local status by Correia-Fagundes et al, 2021: Occasional
Madeira local status by Romano et al, 2010: Very rare, possible breeder (in Selvagens islands)
Madeira local status by Zino et al, 1995: Exceptional, possible breeder Conservation status by the IUCN Red List Categories, 2013: Near Threatened ver 3.1
Portuguese: Paínho de Swinhoe
Dutch: Chinees Stormvogeltje
Swedish: Swinhoes stormsvala
Danish: Mørkrygget Stormsvale
Spanish: Paíño de Swinhoe
French: Océanite de Swinhoe
Italian: Uccello delle tempeste di Swinhoe
Polish: Nawalnik brunatny
Slovak: Víchrovníček malý
Czech: Buřňáček vlaštovčí
English synonyms: Swinhoe's Petrel
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