I've been seeing this Pigeon Guillemot popping in and out of this crevice for the past few weeks. It's just on the way up to the cormorant blind where I do most of my fieldwork. Today I took a peek in there and noticed a bird incubating but one of it's eggs has been kicked to the front of the crevice. This may or may not have been on purpose. Guillemots can lay up to two eggs per clutch but in poor years the second eggs is just insurance in case something happens to the first. If both chicks hatch in a poor year, the second one frequently dies or is kicked out. It's a bit too early to tell what this year will bring for guillemot chicks.
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