Relative Fecundity and Parental Effort in Communally Nesting Anis, Crotophaga sulcirostris The Adaptive Significance of Communal Nesting in Groove-Billed Anis (Crotophaga sulcirostris) Smooth-billed ani (Crotophaga ani) predation on butterflies in Mato Grosso, Brazil: risk decreases with increased group size Dispersal in the Communally Breeding Groove-Billed Ani (Crotophaga sulcirostris) Burger, J., and Gochfeld, M. Smooth-billed Ant (Crotophaga ani) predation on butterflies in Mato Grosso, Brazil: Risk decreases with... Natural History and Reproductive Biology of the Communally Breeding Greater Ani (Crotophaga major) at Gatún Lake, Panama Communal Behaviors Of The Smooth-Billed Ani (crotophaga Ani) Seasonal Pattern of Reverse Mounting in the Groove-Billed Ani (Crotophaga sulcirostris) Habitat Saturation in Groove-Billed Anis (Crotophaga sulcirostris) Egg ejection risk and hatching asynchrony predict egg mass in a communally breeding cuckoo, the Greater Ani (Crotophaga major)