Come identificare Barnacle Goose

Per identificare correttamente Barnacle Goose (Branta leucopsis), controlla ciascuna di queste caratteristiche. Gli uccelli possono essere complicati da riconoscere, perché comportamento, habitat e canto spesso confermano ciò che una sola foto non può.

Dimensioni a colpo d'occhio

Lunghezza

55-70 cm (22-28 in)

Apertura alare

130-145 cm (51-57 in)

Peso

1.2-2.2 kg (2.6-4.9 lbs)

Caratteristiche fisiche da controllare

1. 1

   Piumaggio

   Colorazione e disegno generale del piumaggio.

   Adults have a black neck, breast, and crown, contrasting sharply with a white face and forehead. The back and upperwings are barred grey and black, giving a 'barnacled' appearance, while the underparts are white. The tail is black.

2. 2

   Forma del becco

   Forma e colore del becco, un segno di campo chiave.

   Short, triangular, and black.

3. 3

   Colore degli occhi

   Colore dell'iride e segni distintivi sugli occhi.

   Dark brown

4. 4

   Colore delle zampe

   Colore di zampe e piedi.

   Black

5. 5

   Caratteristiche distintive

   Tratti distintivi che separano questa specie.

   The prominent white face, bordered by black, is the most distinctive feature. The black neck and breast, and the grey-barred back, further aid identification. In flight, the white underparts and dark wingtips are noticeable.

6. 6

   Aspetto giovanile

   Come i giovani si differenziano dagli adulti.

   Juveniles resemble adults but have duller plumage. The black areas are often tinged with brown, and the white face may be smudged with grey or black. The barring on the back is less distinct, and the white underparts may appear dirtier. The bill and legs are also duller.

7. 7

   Cambiamenti stagionali

   Variazione del piumaggio tra stagione riproduttiva e non.

   No significant seasonal plumage changes. The plumage remains consistent throughout the year, though wear and tear can make it appear slightly duller towards the end of the non-breeding season before the annual molt.

8. 8

   Dimorfismo sessuale

   Differenze tra maschi e femmine.

   Males and females are virtually identical in plumage and size, making them difficult to distinguish visually in the field. Males may be slightly larger on average, but this is not a reliable field mark.

Segni di campo chiave

• Facial Pattern. Look for the bright white face contrasting sharply with the black crown, neck, and breast. This is the most definitive field mark.
• Plumage Coloration. Note the black neck and breast, the grey-barred back and upperwings, and the clean white underparts. The tail is black.
• Size and Shape. Medium-sized goose, smaller than a Greylag but larger than a Brent Goose. It has a relatively short neck and a compact body.
• Vocalization. Listen for the distinctive, high-pitched, yapping 'kow-ark' calls, often given repeatedly, especially by flying flocks.
• Behavior. Observe its grazing behavior in open fields or coastal areas. They are often found in large, cohesive flocks.

Esplora Barnacle Goose