(4)-- The Spanish Ornithological Society (SEO / Birdlife) wrote (translation): we were able to verify the occulting of bird carcasses by wind farm employees, who perhaps thought that their jobs depended upon the number of birds being killed in their wind farms, and that behaviour reduces the mortality rate shown in monitoring studies. (savetheeaglesinternational.org)
For example, for decades FWS inspectors have been routinely checking for bird carcasses in oil and gas company liquid - waste pits, which kill as many as a million birds annually. (livescience.com)
Disappointed alliance member John Eacott said the bottom line is the wind power company is just required to collect bat and bird carcasses for three years before taking action: «This is the clear rules that Ontario has established — nothing has to be done.» (windconcernsontario.ca)