Display behaviour.

I'm assuming this is a breeding/aggression display by a red breasted merganser.
There were  a number of males chasing each other.
The bird on the left lifted its tail, lowered its stomach and lifted its head.
This was followed by the merganser stretching his neck as long and tall as it could.

Mergus serrator 

source - Cornell Lab of Ornithology.

Comments

Popular posts from this blog

Golden-crowned kinglet.

Connecticut warbler

My Cat is Stranger Than Your Cat