owady: European nightjar

Evidence: 100 • authority: 72

The European nightjar (Caprimulgus europaeus), common goatsucker, Eurasian nightjar or just nightjar is a crepuscular and nocturnal bird in the nightjar family that breeds across most of Europe and the Palearctic to Mongolia and Northwestern China. The Latin generic name refers to the old myth that the nocturnal nightjar suckled from goats, causing them to cease to give milk. The six subspecies differ clinally, the birds becoming smaller and paler towards the east of the range. All populations are migratory, wintering in sub-Saharan Africa. Their densely patterned grey and brown plumage makes individuals difficult to see in the daytime when they rest on the ground or perch motionless along…

Evidence: 27 • authority: 72

Nightjars are medium-sized nocturnal or crepuscular birds in the family Caprimulgidae and order Caprimulgiformes, characterised by long wings, short legs, and very short bills. Some New World species are called nighthawks. The English word nightjar originally referred to the European nightjar. Nightjars have a wide distribution, being found on all continents apart from Antarctica, and on certain island groups such as the Seychelles and New Caledonia. They can be found in a variety of habitats, most commonly the open country with some vegetation. They usually nest on the ground, with a habit of resting and roosting on roads. Nightjars have similar characteristics, including small feet, of li…

Evidence: — • authority: 72

The Eurasian blackcap (Sylvia atricapilla) is a bird usually known simply as the blackcap. It is a common and widespread warbler. It has mainly olive-grey upperparts and pale grey underparts, and differences across the five subspecies are small. Both sexes have a neat coloured cap to the head, black in the male and reddish-brown in the female. The male's typical song is a rich musical warbling, often ending in a loud high-pitched crescendo, but a simpler song is given in some isolated areas, such as valleys in the Alps. The blackcap's closest relative is the garden warbler, which looks quite different but has a similar song. The blackcap breeds in much of Europe, western Asia and northweste…

Evidence: — • authority: 72

The following is a glossary of common English language terms used in the description of birds—warm-blooded vertebrates of the class Aves and the only living dinosaurs. Birds, who have feathers and the ability to fly (except for the approximately 60 extant species of flightless birds), are toothless, have beaked jaws, lay hard-shelled eggs, and have a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Among other details such as size, proportions and shape, terms defining bird features developed and are used to describe features unique to the class—especially evolutionary adaptations that developed to aid flight. There are, for example, numerous terms describ…

Evidence: — • authority: 88

PHYSIOLOGY OF EMBRYOS IN THE LAST INCUBATION PERIOD AND IN THE NUTRITION OF EGGS. One of the main physiological processes occurring during the pre-election period is the maintenance of glucose homeostasis. Glycogen stores are depleted as embryos hatch. The lack of glycogen causes the embryo to mobilize more muscle protein for gluconeogenesis, thereby slowing down early growth and development until glycogen stores begin to replenish when the newly hatched chick does not get full access to feed

Evidence: — • authority: 92

A Case of Facultative Polygyny in an Enigmatic Monogamous Species, the European Nightjar (<i>Caprimulgus europaeus</i>).. In many socially monogamous bird species with biparental care, occasional social polygyny has been detected. We provide information about a case of facultative polygyny in the European Nightjar ( Caprimulgus europaeus ). The male nightjar (I96) formed a pair with two females (I95: the presumed primary female with whom he already bred since 2018; M042: the presumed secondary female, an inexperienced yearling). GPS and accelerometer data demonstrate how the male only sang in proximity of the primary nest, while assisting both females during incubation, as well as during th…