crepuscular


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crepuscular

(of certain insects, birds, and other animals) active at twilight or just before dawn

crepuscular

[krə′pəs·kyə·lər]
(zoology)
Active during the hours of twilight or preceding dawn.
References in periodicals archive ?
1) corresponded to lower light levels and, more specifically, the nighttime crepuscular period.
Numerous other studies have shown a similar crepuscular pattern.
Crepuscular relates to low light levels at dusk and as such does not provide the expected opposite of clear: it is assumed that this is an error of translation and the current analysis assumes the rating scale was hazy/clear.
Being crepuscular animals, peak activity times for deer are the low light periods of dusk and dawn, which can be effectively extended by the presence of the moon.
In James's view, the fragmentation of the old empire was caused by local warlords--some barbarian, some not--and not by the migration of vast numbers of newcomers; the states that they established were shaped by the circumstances in which they found themselves--the crepuscular political, cultural and social realities of the Empire--rather than by Germanic tradition preserved from time immemorial, and traceable to the pages of Tacitus' Germania.
Hobbled by a declining legacy of mining and heavy industry, the town has a resigned and crepuscular air as it attempts to redefine itself for the post-industrial era.
Summary: In the crepuscular light African dawn of Feb.
Snow leopards are crepuscular, being most active at dawn and dusk they are known for being extremely secretive and well camouflaged.
But I also, with the same caution, explored whether I could distinguish any part of the limb of the moon farther towards the east [west in present day terms]; since if this crepuscular light had been the effect of the light reflected from our globe, it would undoubtedly have appeared more sensibly at the parts most remote from the glare of the illuminated hemisphere.
Night and crepuscular mosquitoes and risk of vector-borne diseases in areas of piassaba extraction in the middle Negro River basin, state of Amazonas, Brazil.
Experimental observations indicate that exposed neuromasts facilitate feeding on zooplankton in crepuscular (poorly lit) conditions by larvae of the cyprinid Gnathopogon elongatus caerulescens (Mukai et al.
Time has long stood still in the innermost reaches of northeast Congo's Ituri Forest a remote and crepuscular world without electricity or cell phones that's so isolated, the Pygmies living here have never heard of Barack Obama, the internet or the war in Afghanistan.