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Tag Archives: dimorphism in Guillemot

Gorgeous Guillemots

21 Monday May 2018

Posted by sconzani in birds, nature

≈ 2 Comments

Tags

birding, birdwatching, Bridled form of Guillemot, British birds, dimorphism in Guillemot, Farne Islands, Guillemot

180521 Guillemot (10)

What gorgeous birds the Guillemots are! A delicious combination of crisp white and rich chocolate brown, a smile that beams contentment, a look of gentleness despite that fierce-looking beak….

180521 Guillemot (1)180521 Guillemot (4)

Guillemots spend most of their lives at sea, only moving on to land to breed, so May was the perfect time to see them on the Farne Islands, where they breed in their thousands each year. The densely packed breeding colonies are called loomeries.

180521 Guillemot (2)

180521 Guillemot (8)
180521 Guillemot (9)

Reciprocal grooming is part of their bonding process and was delightful to watch.

180521 Guillemot (3)

Some Guillemots have an additional white marking around their eyes, like the two you can see in this photo. These are officially known as the ‘bridled’ form, though they look like they’re wearing glasses to me. The bridling is, apparently, caused by a genetic mutation, and there seems to be a correlation with temperature – the bridled form is more common in cooler areas.

180521 Guillemot (5)

I’m not sure what was happening in the top of this photo: bouncing for joy? Jumping off the cliff? Coming in to land?

180521 Guillemot (7)
180521 Guillemot (6)

Sleepy in the sunshine. Just beautiful!

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sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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