Song Thrush

Yes, certainly change it back. Apparently Young female moulting Blackbirds are often mistaken for Thrushes!

She definitely looks more like a Blackbird now, no sign of the white feathers which caused the confusion. Check this thread out: http://www.birdforum.net/showthread.php?t=21824 Yours could have been the same. Youngsters look like they are coming on well also. We rarely see either species here, conditions are not quite right for their requirements but they do occur in some of the parks which have better soil!

The mystery deepens, there is no doubt the male is a Blackbird, we will just have to wait for her to get off the nest when you have your camera handy. Aberrant or hybrid is most likely, so probably not a pure Song Thrush. Blackbirds often have white feathers in odd places.

When the eggs hatch she will be collecting food as well so you should get to see her a lot more.

A third possibility is a hybrid female. It does seem to have more of the blackbirds yellow eye ring as opposed to the Song Thrush's pale eye ring. Are the pale feathers round the edge part of the bird or part of the nest material?

OK, there are two possibilities here. Firstly, Blackbirds have been known to hybridise with Song Thrushes. Secondly, it could be an Aberrant female Blackbird. What we need is lots of photographs of this bird from different angles showing as much of its plumage as possible. With these it may be possible to determine which it is.

By the way, just noticed you are a new user, Welcome to Project Noah, we look forward to seeing more of your pictures. If you have any questions visit our FAQs page http://www.projectnoah.org/faq and you may also like to check our other links across the bottom of the page to learn more about us. Beware of internet pictures showing a female Blackbird, many of them are of the "New World" Blackbird which does look like a Song Thrush but is found in North America.

This is not a female Common Blackbird at all but its close relative, the Song Thrush, Turdus philomelos. The female Blackbird is Brownish, not greyish under the throat and does not have the the pale supercilium forward of the eye. When you have corrected this please add it to the mission "Birds of Iberia" http://www.projectnoah.org/missions/7726003 along with any other Iberian birds you may have.