I walked the Bridgenorth Trail this evening with my daughter, Sophie. We heard a Black-billed Cuckoo calling repeatedly at the Bridgenorth end of the trail. We also tried shaking the branches of the cedar trees and, sure enough, a cloud of 2 mm-long Argyresthia moths filled the air each time. The tiny caterpillars of this moth (known as cedar leafminers) have been excavating tunnels in the leaves of the cedars this spring, resulting in a generalized browning of the foliage of nearly all of the white cedars in the Peterborough area.
Location: Bridgenorth Trail
Observer: Drew Monkman