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Zyxomma petiolatum, [3] known by the common names long-tailed duskdarter, [4] brown dusk hawk [5] [6] and dingy duskflyer, is a species of dragonfly in the family Libellulidae. [7] It is widespread in many Asian countries, [ 8 ] [ 1 ] [ 9 ] New Guinea, northern Australia and islands in the Pacific.
The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [4] However, technically, the three stages of dusk are as follows: At civil dusk, the center of the Sun's disc goes 6° below the horizon in the ...
Darkwing or Dusk, a 2007 Silverwing novel by Kenneth Oppel; Po-on or Dusk, a 1984 novel by F. Sionil Jose; Dusk, a 2006 novel by Tim Lebbon; Dusk (comics), several Marvel Comics characters; Dusk, a 1941 verse drama by Paul Goodman; Nathaniel Dusk, a DC Comics character; Dusk, a character in DC Comics' The Final Night
Blue hour at the Old Cathedral of the Holy Name of Jesus, Bragança in Portugal. The blue hour (from French l'heure bleue; [1] [a] pronounced [lœʁ blø]) is the period of twilight (in the morning or evening, around the nautical stage) when the Sun is at a significant depth below the horizon.
This can have a potential impact on the times and durations of dawn and dusk. This effect is more pronounced closer to the poles, where the Sun rises at the vernal equinox and sets at the autumn equinox, with a long period of twilight, lasting for a few weeks. [citation needed]
They are easily detected by their distinctive tremulous, eerie calls at dawn and dusk. The characteristic call is a duet of the male and female, while other notes include a low hoot and a screech. Their large size, lack of "ear" tufts and the concentric barring on the face make them easy to identify.
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Buff-collared nightjar Conservation status Least Concern (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Clade: Strisores Order: Caprimulgiformes Family: Caprimulgidae Genus: Antrostomus Species: A. ridgwayi Binomial name Antrostomus ridgwayi Nelson, 1897 Range Breeding Year-round Synonyms Caprimulgus ridgwayi The buff-collared nightjar or ...