GREY PARTRIDGE

Perdix perdix hispaniensis

English: Grey Partridge.
German: Rebhuhn.
French: Perdrix grise.

Clasificación/Clasification

Order: Galliformes.
Family: Phasianidae.

Longitud/Length

29-31 cm.

Envergadura/Wingspan

45-48 cm.

Aves relacionadas/Similar species

The Grey Partridge can’t be confused with any other Iberian species. This partridge can be differentiated from the Red-legged Partridge by its pale orange face and its gray neck and chest.

Sexo/Sexing

There is some sexual dimorphism. The male has a distinct dark brown horseshoe on its lower belly. On the other hand, the female only shows traces of this peculiar mark. Juveniles have a striped pattern instead of the spot. The scapulars and median secondary coverts in males have a single longitudinal nerve with very precise contours, while in females there is a more diffuse longitudinal nerve crossed by two transverse traces. The male’s pileum is adorned with fine stripes, while the female has a whitish speckled pattern.

Edad/Ageing

It is possible to recognize a minimum of 2 different ages:

Juvenile specimen: these individuals have a completely brown-ochre plumage. From the throat to the flank, there is a design of very dark and white stripes. They lack a white spot and horseshoe on the belly. Brown undertail coverts.

Adult specimen: individuals with well-defined white-black and gray-ochre tones. Without juvenile generation feathers. If there were a molting limit, they will always be of adult generation.

Muda/Moult

Complete postbreeding moult, usually finished in October. Partial postjuvenile moult including all feathers except the two outermost primaries and their primary coverts, which are retained. Both age classes have a prebreeding moult involving only body feathers.

Configuración del plumaje/Plumage configuration

Primaries: 10 per wing.
Secundaries: 15-16 per wing.
Rectrices: 18.

Observaciones/Remarks

Link: http://blascozumeta.com/

Medidas/Measures

Biometría/Biometrics

Adult specimen:
Beak tip to pupil center:
Tarsus:

Adult male specimen

1.- Left wing primaries. 2.- Primaries. 3.- Details of P1 inner vane. 4.- Details of the tips of the outer primaries. 5.- Details of the tips of the inner primaries (P1, P2, and P3). 6.- Details of the outer vane of the primaries. 7.- Details of the inner vane of P3, P5, and P7. 8.- Details of the outer vane of P10 and P9. 9.- Secondaries (S14-S8). 10.- Secondaries (S7-S1). 11.- Primaries, secondaries, and tertials of the left wing. 12.- Details of the tips of the secondaries. 13.- Details of the outer vane of the secondaries. 14.- Details of the outer and inner vane of S3 and S4. 15.- Details of the tip of S3 and S4. 16.- Details of the tertials. 17.- Details of the tips of the tertials. 18.- Primaries, secondaries, and tertials of the left wing. 19.- Primaries, secondaries, and tertials of the left wing. 20.- Primaries, secondaries, and tertials. Primary coverts and secondary coverts. 21.- Primaries, secondaries, and tertials. Primary coverts and secondary coverts + median coverts. 22.- Primaries, secondaries, tertials. Primary and secondary coverts (G, M, and L). Alulas. 23.- Primary coverts. 24.- Details of the primary coverts. 25.- Left wing primary coverts. 26.- Secondary coverts (G, M, and L). 27.- Greater coverts. 28.- Details of the secondary coverts. 29.- Alulas. 30.- Median coverts. 31.- Details of the median coverts. 32.- Details of the median coverts. 33.- Details of the tertiary coverts. 34.- Rectrices. 35.- Rectrices. 36.- Details of the tips of the rectrices. 37.- Details of the tips of the central rectrices. 38.- Details of R2. 39.- Details of the rectrices. 40.- Rectrices + uppertail coverts. 41.- Details of the uppertail coverts. 42.- Uppertail coverts. 43.- Rectrices + undertail coverts. 44.- Details of the undertail coverts. 45.- Undertail coverts. 46.- Assembly of feathers on the left scapula. 47.- Feathers on the left scapula. 48.- Infra-primary coverts. 49.- Infra-secondary coverts. 50.- Assembly of feathers on the left flank. 51.- Feathers on the left flank. 52.- Assembly of feathers on the chest. 53.- Feathers on the chest. 54.- Assembly of feathers on the belly. 55.- Feathers on the belly. 56.- Assembly of feathers on the back. 57.- Feathers on the back. 58.- Face feathers. 59.- Crown feathers.

GREY PARTRIDGE

Medidas/Measures

Adult male specimen

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