Animal behavior primarily characterized by activity during the twilight
For the atmospheric optical effect, see crepuscular rays.
A red fox at duskA domestic cat at low light
Look up crepuscular in Wiktionary, the free dictionary.
In zoology, a crepuscular animal is one that is active primarily during the twilight period,[1] being matutinal, vespertine/vespertinal, or both. This is distinguished from diurnal and nocturnal behavior, where an animal is active during the hours of daylight and of darkness, respectively. Some crepuscular animals may also be active by moonlight or during an overcast day. Matutinal animals are active only before sunrise, and vespertine only after sunset.
A number of factors affect the time of day an animal is active. Predators hunt when their prey is available, and prey try to avoid the times when their principal predators are at large. The temperature may be too high at midday or too low at night.[2] Some creatures may adjust their activities depending on local competition.
^"Glossary". North American Mammals. Smithsonian – National Museum of Natural History. Archived from the original on May 25, 2017. Retrieved July 16, 2017.
Look up crepuscular in Wiktionary, the free dictionary. In zoology, a crepuscularanimal is one that is active primarily during the twilight period, being...
nocturnal animals and groups of animals. Birds are listed separately in the list of nocturnal birds. Aardvark Aye-aye African elephant (possibly crepuscular; when...
the early morning. The term may describe the morning activities of crepuscularanimals that are significantly active during the predawn or early hours and...
except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal and animals active at sporadic times...
sunlight. Diurnal animals, including humans (except for night owls), squirrels and songbirds, are active during the daytime. Crepuscular species, such as...
earths, and is predominantly active around twilight (making it a crepuscularanimal). Adult foxes tend to range around an area of between 5 and 15 square...
south of the equator―are favorable for viewing the zodiacal light. Crepuscular – animals that are active primarily in the early morning and the evening Dusk...
ones carrying the short variant were evening preference people. Crepuscular – animals that are active primarily in the early morning and the evening Learner's...
endemic to the island of Palawan in the Philippines. It is a rare, crepuscularanimal that has only been found in intact primary forest. Brown, R.; Dimalibot...
(adj.)) is a windowless building or room for housing nocturnal or crepuscularanimals, or nyctinastic plants. Artificial lighting is staggered to the local...
and 2n=40, FN=76. It is a solitary, nocturnal or more accurately crepuscular, animal usually seen after nightfall or before dawn, feeding on grass and...
and the Roborovski hamster (Phodopus roborovskii). Hamsters are more crepuscular than nocturnal and, in the wild, remain underground during the day to...
into gardens close to their habitat. Eastern slow worms are mostly crepuscularanimals, but are sometimes found to be active during the daytime, especially...
nocturnal, though some may be crepuscular. Hedgehogs typically take refuge in the empty burrow of another small animal, or a burrow they dug themselves...
solitary. Its activity pattern varies from diurnality and cathemerality to crepuscularity and nocturnality between protected and non-protected areas, and is apparently...
either of two species (Chinchilla chinchilla and Chinchilla lanigera) of crepuscular rodents of the parvorder Caviomorpha, and are native to the Andes mountains...
well developed. It is a social species, but a solitary hunter and a crepuscular predator. Cat communication includes vocalizations like meowing, purring...
To escape the desert heat, xerocoles tend to be either nocturnal or crepuscular (most active at dawn and dusk). Xerocoles have developed a variety of...
thick, curved nails used for climbing and gripping tree limbs. As a crepuscularanimal, it is most active during the dusk and dawn hours, feeding primarily...
backwards like a domestic cat. The gray fox is primarily nocturnal or crepuscular and makes its den in hollow trees, stumps or appropriated burrows during...
enough to allow them to locate food. Some animals are crepuscular mainly because their prey is. Crepuscularanimals in the area include mule deer, coyotes...
active from dusk until midnight. In northeastern China, tigers were crepuscular and active at night with activity peaking at dawn and dusk; they were...
common during the early dawn and late evening, which is also when the crepuscular deer are most active in general. Female red deer reach sexual maturity...
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