Several days every autumn we count thousands of Northern Gannets. And many other seabirds! Photo: Pablo Gutiérrez Varga.

Main seabird species from June to December

The most common seabirds in Estaca are:


Common scoter
Main passage: autumn months
Best day on record: Sep 29th, 1967 - 2,042 in 1,30 hs (1,361,33 / h)


Cory's Shearwater
Main passage: summer - autumn
Best day on record: Oct 16th, 2012 - 9,488 in 5,45 hs (1,650 / h).


Great Shearwater
Main passage: November
Best day on record: Nov 18th, 2022 - 12,300 in 2,45 h (4,472 / h)
(On Nov 14th 2017 c. 16.000 "during the morning" (no hours indicated by the observer)


Sooty Shearwater
Main passage: September and October
Best day on record: Oct 7th, 2015 - 7,328 in 5,30 h (1,332 / h)


Manx Shearwater
Main passage: end Aug to October
Best day on record: Sep 9th, 2017 - 60,000 in 12,45 h (4,705 / h)


Balearic Shearwater
Main passage: autumn
Best day on record: Nov 11th, 2019 - 1,255 in 5 h (251 / h)


British Storm Petrel
Main passage: June - July and autumn
Best day on record: Jul 6th, 2007 - 141 in 3 hs (47 / h)


Northern Gannet
Main passage: October - November
Best day on record: Oct 22th, 2021 - 77,370 in 8,30 h (9,102 / h)


Grey Phalarope
Main passage: Autumn
Best day on record: Aug 17th, 2022 - 2,471 in 13 h (190 / h)


Pomarine Skua
Main passage: August - November
Best day on record: Oct 12th, 1997 - 2,520 in 9,30 hs (265,2 / h)


Arctic Skua
Main passage: August - October
Best day on record: Aug 29th 2020 - 589 in 12 h (49 / h)
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Long-Tailed Skua
Main passage: end August - September
Best day on record: Sept 5th, 2011 - 493 in 12,45 hs (38,6 / h)


Great Skua
Main passage: autumn and winter
Best day on record: Sept 18th, 2011 - 949 in 11,45 hs (80 / h)


Mediterranean Gull
Main passage: autumn and winter
Best day on record: Nov 6th, 2021 - 2,985 in 9,15 hs (322 / h)


Little Gull
Main passage: winter
Best day on record: Dec 18th, 2011 - 3,026 in 6 hs (504,3 / h)


Sabine's Gull
Main passage: August - September
Best day on record: Sept 25th, 2019 - 720 in 2 hs (360 / h)


Kittiwake
Main passage: winter
Best day on record: Dec 5th, 2012 - 8,718 in 3 hs (2,906 / h)


Sandwich Tern
Main passage: August - October
Best day on record: Oct 3rd, 2020 - 1,886 in 6 hs (311 / h)


Common / Arctic Tern
Main passage: august - september
Best day on record: Aug 29th, 2020 - 9,029 in 12 hs (752 / h)


Roseate Tern
Main passage: august - september
Best day on record: Sept 18th, 2011 - 137 in 11,45 hs (11,6 / h)


Little Tern
Main passage: august - september
Best day on record: Sept 14th, 1988 - 137 in 5,30 hs (30 / h)


Black Tern
Main passage: august - september
Best day on record: Sept 4th, 2005 - 281 in 3,45 hs (74,9 / h)


Guillemot
Main passage: winter
Best day on record: Dec 22th, 2011 - 460 in 4 hs (115 / h)


Razorbill
Main passage: winter
Best day on record: Nov 8th, 2003 - 1,802 in 4,30 hs (400,4 / h)


Puffin
Main passage: winter
Best day on record: Dec 18th, 2011 - 2,126 in 6 hs (354 / h)

Common Scoters from Estaca (Pablo Gutiérrez)

Great Shearwater. Photo taken in a pelagic in Galicia (Pablo Gutiérrez)

Cory's Shearwater. Photo taken in a pelagic in Galicia (Pablo Gutiérrez)

Manx Shearwaters. Photo from Estaca (Juan Sagardía)

Balearic Shearwater. Photo taken during a pelagic in Galicia (Pablo Gutiérrez)

Pomarine skua. Photo taken during a pelagic in Galicia (Dani López Velasco)

Great Skuas from Estaca (Juan Sagardía)

Razorbills from Estaca (Antonio Martínez Pernas)

Kittiwakes from Estaca (Antonio Martínez Pernas)