Come identificare African Sacred Ibis

Per identificare correttamente African Sacred Ibis (Threskiornis aethiopicus), 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

65-75 cm

Apertura alare

112-124 cm

Peso

1.2-1.5 kg

Caratteristiche fisiche da controllare

1. 1

   Piumaggio

   Colorazione e disegno generale del piumaggio.

   Adults have predominantly white body plumage. The head and upper neck are bare and black, as are the legs and feet. The secondary and inner primary flight feathers have dark tips, forming a black trailing edge to the wing in flight. During breeding season, ornamental scapular plumes develop, which are black with a greenish-blue gloss.

2. 2

   Forma del becco

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

   Long, stout, and strongly decurved (downward-curving) black bill.

3. 3

   Colore degli occhi

   Colore dell'iride e segni distintivi sugli occhi.

   Dark brown, with a dark orbital ring.

4. 4

   Colore delle zampe

   Colore di zampe e piedi.

   Black

5. 5

   Caratteristiche distintive

   Tratti distintivi che separano questa specie.

   Bare black head and neck, long decurved black bill, white body, and black ornamental plumes on the back during breeding season. In flight, the black trailing edge of the wings is prominent.

6. 6

   Aspetto giovanile

   Come i giovani si differenziano dagli adulti.

   Juveniles have a feathered head and neck, which are dusky brown or blackish, often with some white streaking. The bill is shorter and less decurved than adults. They lack the ornamental scapular plumes. The body plumage is duller white, sometimes with brownish smudges.

7. 7

   Cambiamenti stagionali

   Variazione del piumaggio tra stagione riproduttiva e non.

   During the breeding season, adults develop prominent black ornamental scapular plumes that extend over the back and tail. These are less developed or absent during the non-breeding season.

8. 8

   Dimorfismo sessuale

   Differenze tra maschi e femmine.

   Males and females are generally monomorphic in plumage and size, though males may be slightly larger on average.

Segni di campo chiave

• Plumage. Look for the striking contrast of a pure white body against a bare black head and neck. Breeding adults will show black ornamental plumes on the back.
• Bill. Observe the long, stout, and distinctly decurved black bill, which is a key identification feature.
• Legs and Feet. Note the long, black legs and feet.
• Flight. In flight, the black trailing edge of the wings (formed by the dark tips of secondary and inner primary feathers) is very noticeable against the white body.
• Juveniles. Young birds have a feathered, dusky head and neck, and a less decurved bill, but still retain the overall white body plumage.

Esplora African Sacred Ibis