purplehairstreak's picture

Unidentified bird

Observed: 17th April 2013 By: purplehairstreak
IMG_7950
Description:

I found this dead bird whilst out walking yesterday and don't know what species it is. Can anyone help me identify it?

Identifications
Species interactions

No interactions present.

Species with which Common Chiffchaff (Phylloscopus collybita) interacts

Comments

gramandy's picture

on this dead..

...bird

How do we know this is a Chiffchaff, especially when there is a lot of confusion with Willow Warbler? I would really struggle with this? I need to learn :)

ophrys's picture

Chiff

The wing of Willow Warbler is longer than that of Chiffchaff, as it is a longer distance migrant. These birds have 10 primary feathers, with the outermost being very short indeed (not visible here). Counting from the outside (and including that short feather), the wing tip of Willow is formed by the 3rd (occasionally with the 4th) feather, but on Chiffchaff it's the 4th and 5th feathers. On this bird, it seems to be the 4th/5th feathers which are longest, so that suggests Chiffchaff.

Then,the dark legs suggest Chiffchaff, as does the duller plumage than Willow.

Ian
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http://www.flickr.com/photos/52163027@N02/

purplehairstreak's picture

Thanks!

Thanks for all your help! I also initially thought it may be a Warbler. I know there seems to be a good amount of certainty that it's a Chiffchaff, but would some more photos from different angles make it even more obvious?

ophrys's picture

Chiff

I suppose a close up of the face pattern would show the darker cheeks of Chiffchaff, and the spread wing would show what I've said about primary feather lengths, but, really, there is enough in this picture to be sure.

Ian
_________________

My Flickr photos...

http://www.flickr.com/photos/52163027@N02/

gramandy's picture

thanks..

..Ian - this is a great help to me.