Radioactive dead bird

A Photojournalist Takashi Morizumi posted a couple of radioautographs of a dead Japanese Bush Warbler Narcissus Flycatcher found in Iitate, Fukushima on his blog.

The black spots on the radioautographs indicate cesium 137. Duration of exposure is a month.

See pictures on his blog post:
http://mphoto.sblo.jp/article/55571894.html

(UPDATE)
The bird is actually Narcissus Flycatcher which is very similar to Japanese Bush Warbler. It’s been corrected by Mr. Morizumi.