Black Flies forcing loons out.

One of the efficient fishing machines are loons, and they are being forced out by Black Flies. Perhaps, one of these days, they can be used to control their population when they also begin to feast on record numbers of fish.

http://www.designntrend.com/articles/15446/20140616/biting-flies-forcing-loons-to-leave-nests-in-record-numbers.htm