cadviodi
The fancy Guillemot
The bridled form of guillemots is an example of dimorphism characterised by a white circle around the eye and a line extending backwards. It seems that this variant is more cold tolerant than the common one, and because of that there is a latitudinal variation in the percentage of bridling guillemots. In the Isle of May (Scotland), the bridled form represents 5% of the total guillemot population (Harris et al., 2001).
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The fancy Guillemot
The bridled form of guillemots is an example of dimorphism characterised by a white circle around the eye and a line extending backwards. It seems that this variant is more cold tolerant than the common one, and because of that there is a latitudinal variation in the percentage of bridling guillemots. In the Isle of May (Scotland), the bridled form represents 5% of the total guillemot population (Harris et al., 2001).
Click here if you are curious about this species.