Come identificare Bar-tailed Godwit

Per identificare correttamente Bar-tailed Godwit (Limosa lapponica), 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

37-41 cm

Apertura alare

70-82 cm

Peso

230-450 g (males), 300-600 g (females)

Caratteristiche fisiche da controllare

1. 1

   Piumaggio

   Colorazione e disegno generale del piumaggio.

   Non-breeding plumage is predominantly grey-brown above, with white underparts and a streaked breast. Breeding plumage is striking, with rich rufous-chestnut on the head, neck, and underparts, contrasting with dark brown upperparts. The rump is white, and the tail is distinctly barred with dark brown and white.

2. 2

   Forma del becco

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

   Long (9-12 cm), slightly upturned, bicolored bill; pinkish at the base, darkening to black towards the tip.

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.

   Dark grey to blackish.

5. 5

   Caratteristiche distintive

   Tratti distintivi che separano questa specie.

   Long, slightly upturned bicolored bill, white rump, and distinctly barred tail (hence 'bar-tailed'). In flight, shows no prominent wing-bar, unlike the Black-tailed Godwit.

6. 6

   Aspetto giovanile

   Come i giovani si differenziano dagli adulti.

   Juveniles resemble non-breeding adults but have a more buffish wash on the head, neck, and breast, and often show fine barring on the flanks. The upperparts have a scaly appearance due to pale feather fringes.

7. 7

   Cambiamenti stagionali

   Variazione del piumaggio tra stagione riproduttiva e non.

   Dramatic change from dull grey-brown non-breeding plumage to vibrant rufous breeding plumage. The rufous coloration is most intense in males during the breeding season.

8. 8

   Dimorfismo sessuale

   Differenze tra maschi e femmine.

   Males in breeding plumage are more intensely rufous than females, which tend to be paler and often retain some grey on the belly. Females are also generally larger and heavier, with a longer bill.

Segni di campo chiave

• Bill Shape and Color. Look for a long, slightly upturned bill that is pinkish at the base and dark towards the tip. This bicolored appearance is distinctive.
• Tail Pattern. The tail is distinctly barred with dark brown and white, especially visible in flight or when the bird preens. This is a key differentiator from the Black-tailed Godwit.
• Rump Color. A pure white rump is visible in flight, contrasting with the barred tail.
• Plumage (Breeding vs. Non-breeding). In spring/summer, look for the rich rufous-chestnut on the head, neck, and underparts. In autumn/winter, it will be a duller grey-brown. Note the extent of rufous on the belly for sexing.
• Absence of Wing-bar. Crucially, in flight, the Bar-tailed Godwit lacks the prominent white wing-bar seen in the Black-tailed Godwit.
• Size and Structure. A large shorebird with relatively short legs for a godwit, giving it a somewhat 'stocky' appearance compared to the more elegant Black-tailed Godwit.

Esplora Bar-tailed Godwit