While checking on the Pied-billed Grebe nest off Route 73 in Brandon, I heard a Yellow-billed Cuckoo in the willow shrubs adjacent to the road.  Later on Willow Brook Road in Sudbury I heard and then observed a Black-billed Cuckoo.

Incidentally, the grasses/sedges have grown too thick to see the Pied-billed Grebe nest.  However, two adults were observed, [no chicks], and a third bird heard only from a different locality.

Cheers, Roy Pilcher