This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
These two small warblers are easily confused unless heard singing but there are subtle differences to note.
Willow Warbler usually has pale legs whilst Chiffchaff legs are usually dark. The Chiffchaff has more olive upperparts and a less conspicuous supercilium whilst its bill is usually universally darkish whilst that of Willow Warbler has a darkish upper mandible and a slightly paler lower mandible. The clincher however is the primary projection which is always markedly longer in Willow Warbler.
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: combination. The original can be viewed here: Flickr - Rainbirder - Willow Warbler (Phylloscopus trochilus).jpg: .
.
Licensing
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
You are free:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This image, originally posted to Flickr, was reviewed on 12 September 2010 by the administrator or reviewer Diaa abdelmoneim, who confirmed that it was available on Flickr under the stated license on that date.
Captions
Add a one-line explanation of what this file represents
Click on a date/time to view the file as it appeared at that time.
Date/Time
Thumbnail
Dimensions
User
Comment
current
17:20, 12 September 2010
933 × 350 (126 KB)
Dudubot
{{Information |Description=These two small warblers are easily confused unless heard singing but there are subtle differences to note. WW usually has pale legs whilst Chiffchaff legs are usually dark. The Chiffchaff has more olive upperparts and a less c
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):