What type of predator poses a greater threat to the eggs and nestlings than large raptors?

Answer

Predators capable of stealthy ascent or climbing

Since the nest is stationary, the danger comes less from visible raptors and more from terrestrial or arboreal climbers capable of sneaking up to the nest.

What type of predator poses a greater threat to the eggs and nestlings than large raptors?
birdPredatorKiskadee