Behavior characterized by activity during the day and sleeping during the night
Steppe eagles are diurnal, and hunt during the dayHumans are diurnal, and organize their work and business mainly in the day[a]
Diurnality is a form of plant and animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnality is a cycle of activity within a 24-hour period; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal and animals active at sporadic times during both night and day are cathemeral.
Plants that open their flowers during the daytime are described as diurnal, while those that bloom during nighttime are nocturnal. The timing of flower opening is often related to the time at which preferred pollinators are foraging. For example, sunflowers open during the day to attract bees, whereas the night-blooming cereus opens at night to attract large sphinx moths.
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primates converted back to diurnality, better vision that included trichromatic colour vision became very advantageous, making diurnality and colour vision adaptive...
Look up diurnal in Wiktionary, the free dictionary. Diurnal ("daily") may refer to: Diurnal cycle, any pattern that recurs daily Diurnality, the behavior...
article on "diurnal arc", but its sister project Wiktionary does: Read the Wiktionary entry "diurnal arc" You can also: Search for Diurnal arc in Wikipedia...
Diurnal motion (from Latin diurnus 'daily', from Latin diēs 'day') is an astronomical term referring to the apparent motion of celestial objects (e.g...
Diurnal enuresis is daytime wetting (functional daytime urinary incontinence). Nocturnal enuresis is nighttime wetting. Enuresis is defined as the involuntary...
In astrology, the signs of the zodiac are classified as diurnal or nocturnal. Diurnal signs have natural positions on the southern hemisphere of the horoscope...
In meteorology, diurnal temperature variation is the variation between a high air temperature and a low temperature that occurs during the same day. Temperature...
with the opportunity of diurnal activity when advantageous. Look up cathemeral in Wiktionary, the free dictionary. Diurnality Nocturnality Crepuscular...
Diurnal mood variation or morning depression is a prominent depression symptom characterized by gradual mood improvement through the day, reaching its...
night. While it is difficult to say which came first, nocturnality or diurnality, a hypothesis in evolutionary biology, the nocturnal bottleneck theory...
Accipitres) were divided into diurnal and nocturnal tribes; the owls remained monogeneric (family Ægolii, genus Strix), whilst the diurnal raptors were divided...
Lizard is the common name used for all squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, ranging...
and latitude of the location on Earth from where the Moon is observed. Diurnal libration is the small daily libration, an oscillation due to Earth's rotation...
societies. Humans are normally diurnal creatures that are active in the daytime[citation needed]. As with most other diurnal animals, human activity-rest...
Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV...
"day". Processes with 24-hour cycles are more generally called diurnal rhythms; diurnal rhythms should not be called circadian rhythms unless they can...
species of moth are nocturnal, although there are also crepuscular and diurnal species. While the butterflies form a monophyletic group, the moths, comprising...
000 light-years away, a ten-fold improvement over earlier measurements. Diurnal parallax is a parallax that varies with the rotation of the Earth or with...
primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and...
In telecommunication, diurnal phase shift is the phase shift of electromagnetic signals associated with daily changes in the ionosphere. The major changes...
can further be broken down into routine cycles during the 24-hour day: Diurnal, which describes organisms active during daytime Nocturnal, which describes...
effects: Diurnal aberration – a deflection caused by the velocity of the observer's motion around the Earth's centre, due to its rotation. Diurnal parallax...
Southern Thailand is characterised by mild weather year-round with less diurnal and seasonal variations in temperatures due to maritime influences.: 3 ...
). Order of Saint Luke. p. 81. ISBN 978-1478391029. The Diurnal Offices: These brief diurnal or daytime offices punctuate the day with prayer. They are...
are dominated by atmospheric tides, which are driven predominantly by diurnal heating. Atmospheric waves dissipate above this level because of collisions...
use the terms morningness and eveningness for the two chronotypes or diurnality and nocturnality in animal behavior. In several countries, especially...
necrophagous beetle, is most active during at dusk and dawn. Cathemeral Crypsis Diurnality Nocturnality "Glossary". North American Mammals. Smithsonian – National...
Tornadoes have been recorded on all continents except Antarctica. They are most common in the middle latitudes where conditions are often favorable for...
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