That is a good question. I'm not sure about birds, but I remember Doug saying that it’s the bright white lights that are an issue for the insects, but his alternative was to put in yellow lights. So, it’s the other wave lengths in the white light that cause the problem. This could be the blue or the red, however I think blue is the more likely to be the issue, since it is an issue for humans as well. I google-ed it to back this up and they said actually red is the least attractive to insects. So other than being ugly in the sky, luckily those greenhouses aren't killing more of our insects, they’re likely doing less harm than the other greenhouses!

@@lowerthamesvalleyconservat604 Although the pink lights are less harmful to insects, I still wish they would turn them off at night so I could see the stars instead of a pink glow in the sky. :)