![audnutittlingur-18](http://ornosk.com/wp-content/uploads/2015/07/audnutittlingur-18.jpg)
In summer the Redpolls often become rather rough and darker than in winter and spring. They probably replace old feathers (moult) and gradually take on a new and fresh plumage. To see the difference there is a picture from July 12 above and below another from the end of April.
![](http://ornosk.com/wp-content/uploads/2015/07/audnutittlingur-15.jpg)