RED-NECKED NIGHTJAR

Caprimulgus ruficollis

English: Red-necked Nightjar.
German: Rothals-Nachtschwalbe.
French: Engoulevent à collier roux.

Clasificación/Clasification

Order: Caprimulgiformes.
Family: Caprimulgidae.

Longitud/Length

24-28 cm

Envergadura/Wingspan

52-59 cm

Aves relacionadas/Similar species

The Red-necked Nightjar is very similar to the European Nightjar, which is smaller (23-27cm; wingspan 52-59cm) and lacks the reddish collar.

Sexo/Sexing

In adult individuals, the male has pure white spots on the three outermost primaries (sometimes four), square in shape. The two innermost spots touch the rachis and extend to the other side of the shaft. The spots at the tips of the two (sometimes three) outer rectrices are large and pure white. On the other hand, the adult female has pure white spots on the three outermost primaries, but with more ochre tones towards the tip and generally oval in shape. Usually, the two innermost primaries (P9 and P8) do not reach the rachis. The spots at the tips of the two outer rectrices are white with ochre tones at the tip and of medium size (sometimes only a thin band).

Edad/Ageing

It is possible to recognize 3 different ages:

Juvenile specimen: has a new plumage and a single generation of feathers, although sometimes some individuals may molt an inner primary before migration. The lesser and median coverts have a pale tip but quickly molt to adult type. The primaries have pale tips. The central rectrices and primaries have narrower tips.

2nd year specimen: only recognizable individuals retain juvenile feathers in the wings, showing a distinct molt boundary between new adult-patterned feathers (generally in the center of the wing) and worn juvenile-patterned feathers. The central and outer rectrices may have been molted.

Adult specimen: lesser and median coverts lack pale tips. All wing and tail feathers have the adult pattern. The tips of the primaries are dark. The tips of the rectrices and central primaries are rounded. Some individuals may have two generations of flight feathers due to suspended molt.

Muda/Moult

The Red-necked Nightjar undergoes a complete postnuptial molt that begins in July in the breeding areas (including body feathers, wing coverts, and some rectrices), halts before migration, and finishes in the wintering areas. On the other hand, the postjuvenile molt is a partial process carried out in the breeding areas, where body feathers and part of the wing coverts are changed. In the wintering areas, the central two rectrices and a variable number of central primaries and secondaries are changed.

Configuración del plumaje/Plumage configuration

Primaries: 10 per wing.
Secundaries: 12-14 per wing.
Rectrices: 10.

Observaciones/Remarks

Link: http://blascozumeta.com/

La obtención de este material ha sido posible gracias al permiso necesario de la Junta de Andalucía.

AUTORIZACIÓN DE LA DIRECCIÓN GENERAL DE MEDIO NATURAL, BIODIVERSIDAD Y ESPACIOS PROTEGIDOS DE LA CONSEJERÍA DE AGRICULTURA, GANADERÍA, PESCA Y DESARROLLO SOSTENIBLE DE LA JUNTA DE ANDALUCÍA, PARA LA CESIÓN DE MUESTRAS BIOLÓGICAS DE ESPECIES DE FAUNA (ARTÍCULO 9 DE LA LEY 8/2003, DE 28 DE OCTUBRE, DE LA FLORA Y LA FAUNA SILVESTRES).

Medidas/Measures

Biometría/Biometrics

Adult specimen:
Beak tip to pupil center: 35mm
Tarsus: 18mm

Texture of the beards

textura de una primaria

textura de una secundaria

textura de una rectriz

Adult male specimen

chotacabras cuellirrojo 1

chotacabras cuellirrojo 2

chotacabras cuellirrojo 3

chotacabras cuellirrojo 4

chotacabras cuellirrojo 5

chotacabras cuellirrojo 6

chotacabras cuellirrojo 7

chotacabras cuellirrojo 8

chotacabras cuellirrojo 9

chotacabras cuellirrojo 10

chotacabras cuellirrojo 11

chotacabras cuellirrojo 12

chotacabras cuellirrojo 13

chotacabras cuellirrojo 14

chotacabras cuellirrojo 15

chotacabras cuellirrojo 16

chotacabras cuellirrojo 17

chotacabras cuellirrojo 18

chotacabras cuellirrojo 19

chotacabras cuellirrojo 20

chotacabras cuellirrojo 21

chotacabras cuellirrojo 22

chotacabras cuellirrojo 23

chotacabras cuellirrojo 24

chotacabras cuellirrojo 25

chotacabras cuellirrojo 26

chotacabras cuellirrojo 27

chotacabras cuellirrojo 28

chotacabras cuellirrojo 29

chotacabras cuellirrojo 30

chotacabras cuellirrojo 31

chotacabras cuellirrojo 32

chotacabras cuellirrojo 33

chotacabras cuellirrojo 34

chotacabras cuellirrojo 35

chotacabras cuellirrojo 36

chotacabras cuellirrojo 37

chotacabras cuellirrojo 38

chotacabras cuellirrojo 39

chotacabras cuellirrojo 40

chotacabras cuellirrojo 41

chotacabras cuellirrojo 42

chotacabras cuellirrojo 43

chotacabras cuellirrojo 44

chotacabras cuellirrojo 45

chotacabras cuellirrojo 46

chotacabras cuellirrojo 47

chotacabras cuellirrojo 48

chotacabras cuellirrojo 49

chotacabras cuellirrojo 50

chotacabras cuellirrojo 51

chotacabras cuellirrojo 52

chotacabras cuellirrojo 53

chotacabras cuellirrojo 54

chotacabras cuellirrojo 55

chotacabras cuellirrojo 56

chotacabras cuellirrojo 57

chotacabras cuellirrojo 58

chotacabras cuellirrojo 59

chotacabras cuellirrojo 60

1.- Right wing primaries. 2.- Details of the inner vane of P10, P9, P8, and P7. 3.- Details of the inner vane of P5, P4, P3, P2, and P1. 4.- Right wing primaries. 5.- Details of the tip of the outer primaries. 6.- Details of the tip of the outer primaries. 7.- Details of the tip of the inner primaries. 8.- Details of the shaft of the primaries. 9.- Secondaries (S1-S6). 10.- Secondaries (S7-S12). 11.- Details of the inner vane of the secondaries. 12.- Right wing secondaries and tertials. 13.- Details of the outer vane of the secondaries. 14.- Details of the shaft of the secondaries. 15.- Details of the tip of the secondaries. 16.- Details of the tertials. 17.- Right wing primaries, secondaries, and tertials. 18.- Right wing primaries, secondaries, and tertials. 19.- Details of the tip of the primaries. 20.- Details of P10, P9, P8, and P7. 21.- Right wing primaries, secondaries, and tertials. Primary and secondary coverts + greater coverts. 22.- Details of the primary coverts. 23.- Details of the greater coverts. 24.- Right wing primaries, secondaries, and tertials. Primary and secondary coverts + greater and median coverts. 25.- Details of the median coverts. 26.- Right wing primaries, secondaries, tertials. Primary and secondary coverts (G, M, and P). Alulas. 27.- Details of the secondary coverts. 28.- Details of the median and lesser coverts. 29.- Details of the tertiary coverts. 30.- Primary coverts. 31.- Greater coverts. 32.- Alulas. 33.- Rectrices. 34.- Details of the inner vane of the rectrices. 35.- Rectrices. 36.- Details of the shaft of the rectrices. 37.- Details of the rectrices. 38.- Rectrices + uppertail coverts. 39.- Details of the uppertail coverts. 40.- Uppertail coverts. 41.- Rectrices + undertail coverts. 42.- Details of the undertail coverts. 43.- Undertail coverts. 44.- Upper: Greater infracovert feathers. Lower: Median infracovert feathers. 45.- Greater secondary infracovert feathers. 46.- Separators. 47.- Right scapula assembly. 48.- Right scapular feathers. 49.- Right flank assembly. 50.- Right flank feathers. 51.- Upper: Chest assembly and feathers. Lower: Belly assembly and feathers. 52.- Whisker assembly. 53.- Whisker assembly. 54.- Whisker assembly. 55.- Whiskers. 56.- Throat feathers. 57.- Back assembly and feathers. 58.- Nape assembly and feathers. 59.- Crown assembly and feathers. 60.- Right auricle feathers.

RED-NECKED NIGHTJAR

Medidas/Measures

Texture of the beards

Adult male specimen

Leave a Comment Cancel Reply