http://www.dartdorset.org/Windfarms_Compilation_of_birdkill_statistics.pdf

there's lots of links at the end of the document

also bats

http://www.sciam.com/article.cfm?articleID=000EB932-D3E2-1FF8-90AE83414B7F0000&ref=sciam&chanID=sa004

there are many links to reports from home and abroad here, as well as report summaries

http://www.countryguardian.net/Birds%20and%20Bats.htm