Science news articles about 'dawn and dusk'

... behavioural displays during certain conditions of ambient light, such as the crepuscular light of dawn and dusk, could also serve as additional cues for social communication by nocturnal species. "If ...

Researchers in Spain describe the evolution of white throat badges in association with dawn and dusk vocal signals in certain species of nocturnal bird, which maximize the potential for these species ...

... in carnivore populations are even more surprising when you consider that these animals are most active at night, dawn and dusk, and that people visit parks during the day, Reed said. "We assumed that ...

... males at different times of day, from before dawn to dusk. In all four species, he found distinct ... . Scientists disagree on why birds chorus at dawn and dusk: competing ideas range from territorial ...

... , spreading fertilizer, harvesting – The days are gone when farmers labored from dawn to dusk in the fields. Today's modern farmer spends a considerable part of each day sitting in front ...

... and whitetail deer, fruit flies are crepuscular — they are most active at dawn and dusk, tend to roam a bit during the daytime, and engage in what passes for sleep during the nighttime. ...

... (7 adult males, 8 adult females), conducting continuous observations of the same animal from dawn to dusk, and following each of the monkeys for at least one whole day a month. During observations ...

... (Drosophila melanogaster) – commonly seen hovering around rotting fruit and vegetables - are active at dawn and dusk, and have a deep sleep at night. They also exhibit a marked 'resting state' during ...