Great shearwater / Großer Sturmtaucher (Ardenna gravis)

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Classification: Genus Ardenna; Family Shearwaters and petrels (Procellariidae)
This bird appears across the great seas in the following continents: Europe, North America, Africa.
General:

The great shearwater (Ardenna gravis) is a large shearwater in the seabird family Procellariidae. Ardenna was first used to refer to a seabird by Italian naturalist Ulisse Aldrovandi in 1603, and gravis is Latin for "heavy".^[3] [more]
Calls:

Calls at breeding ground a deep, soft, moaning "oooh-aahh" ("surprised or shocked old lady"). Tone fairly clear, and pitch rising and falling. [Link]
Physical details: length=43-51 cm, wingspan=100-118 cm, weight=715-950 g

🔍 No documented observation