Definition of "insectivorous"

Researchers in the Netherlands have linked neonicotinoids found in surface water to declines in insectivorous birds and there is widespread scientific evidence that neonicotinoids harm bees – reducing their ability to pollinate plants, for instance.

2015 November 24, Patrick Barkham, “Pesticide may be reason butterfly numbers are falling in UK, says study”, in The Guardian‎