Anas acuta
ánade rabudo
English: Northern Pintail.
German: Spießente.
French: Canard pilet.
Order: Anseriformes.
Family: Anatidae.
51-66 cm.
Distinctive plumage on male. Wing and tail design distinguishes female, non-breeding male and juveniles from other ducks.
Male has a dark brown head, throat, and nape. Neck sides, chest and central underparts are white. Gray scapulars and tertials with a black central stripe. Long and pointed central pair of rectrices. Female has light brown spotted or striped plumage with black or brown. Alar underwing coverts with light brown bars and lighter edges.
It is possible to recognize 2 different ages:

1st or 2nd year especimen: with varying amounts of juvenile feathers retained on body, tail, and wings. Juvenile greater coverts are retained. If tertials are retained, they are narrow and pointed, grayish brown with a dark center. Some or all rectrices may be retained juvenile feathers.

Adult especimen: with broad and square-tipped greater coverts. Pearl gray tertials with dark centers in males. Brown gray with dark centers in females.
Northern Pintail begin partial pre-breeding molt in October acquiring breeding plumage (both age types). During the early winter months, tertials, rectrices, and some body feathers may be actively molting.
Primaries: 10 per wing.
Secundaries: 16-17 per wing.
Rectrices: 16.


Adult specimen:
Beak tip to pupil center:

Adult male specimen


1.- Left wing primaries. 2.- Left wing secondaries and tertials. 3.- Complete left wing. 4.- Greater coverts details + Secondaries (wing bar) details. 5.- Greater coverts details + Secondaries (wing bar) details. 6.- Tertial details. 7.- Rectrices. 8.- Rectrices + Uppertail coverts.

Leave a Comment

Your email address will not be published. Required fields are marked *

Esta web utiliza cookies propias para su correcto funcionamiento. Contiene enlaces a sitios web de terceros con políticas de privacidad ajenas que podrás aceptar o no cuando accedas a ellos. Al hacer clic en el botón Aceptar, acepta el uso de estas tecnologías y el procesamiento de tus datos para estos propósitos. Configurar y más información