We had both Yellow billed and black billed cuckoos on Bennett Road in Rondeau Provincial Park.
They were displaying well.
This is a shot of the yellow billed.
Yellow-Billed Cuckoos have a primal-sounding, croaking call that they often give in response to loud noises. Their tendency to call at the sound of thunder has led to their colloquial name, the “rain crow.”
source - Cornell Lab of Ornithology.