Crepuscular creatures abound in Southwest Colorado. They live in the high mountains, sage plains, ponderosa forests, desert canyons and everywhere in between. They are all shapes and sizes. Some are ...

Owls are so famous for their nighttime escapades, that the phrase "night owl" developed to describe people who stay up late. But the saying is actually a bit misleading because some owls are active ...

The lunar cycle is known to affect the behaviour of strictly nocturnal species, but for diurnal species that are periodically active during the night, this has been less investigated. Nocturnal bird ...

Luz Marina Rojas, Raymond McNeil, Thérése Cabana and Pierre Lachapelle We compared the diurnal and nocturnal visual function in two tactile foraging waterbird species, the red subspecies of the ...