What constitutes the primary food source for the Canada Warbler?

Answer

Insects and spiders gleaned from foliage or snatched from the air

The diet of the Canada Warbler mainly consists of small arthropods, which they capture by gleaning them off surfaces or snatching them during aerial pursuits.

What constitutes the primary food source for the Canada Warbler?
behaviorbirdornithologywildlifewarbler