Erika and I found several Double-crested Cormorants at the Wood Lake Nature Center near Minneapolis on 21 September 2018. This species is the most widespread and most common of the six North American cormorants. Double-crested Cormorants often perch with their wings spread. This behavior probably helps to dry out their plumage. On the other hand, wet feathers may aide in a cormorant’s ability to dive. Wing spreading may have a role in temperature regulation (Dorr et al. 2014). Not all cormorant species show wing spreading behavior.
No comments:
Post a Comment