Most microbats are nocturnal and megabats are typically diurnal or crepuscular. There are diurnal, crepuscular, and nocturnal artiodactyls. Wild water buffaloes are both diurnal and nocturnal. Giant anteaters can be either diurnal or nocturnal. They may considered as nearly nocturnal and diurnal ecological equivalents. Reports differ as to whether they are diurnal or nocturnal animals. The snake is terrestrial, diurnal and crepuscular. The Pathfinder lander recorded the variation of diurnal temperature cycle. Temperatures typically plummet during summer nights, with an average diurnal temperature variation approaching . Its function is highly dependent on marked diurnal temperature variations. Feeding and digestion are synchronized with diurnal and tidal cycles. Diurnal nesting is common in both species. The osprey differs in several respects from other diurnal birds of prey. Their frugivorous habits are actually convergent with those of (diurnal) spider monkeys. Diurnal and geographical variation further complicate the picture.