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Crepuscular


Fireflies are crepuscular beetles.
Fireflies are crepuscular beetles.
Photographer: Bruce Marlin


A Crepuscular animal is one that is mainly active at dawn and dusk.


Many mammals, birds and insects are crepuscular.


The word crepuscular comes from the Latin crepusculum which means twilight.


Also see:
Diurnal
Nocturnal

 


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