Come identificare Grey Crowned Crane

Per identificare correttamente Grey Crowned Crane (Balearica regulorum), 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

100-110 cm (39-43 in)

Apertura alare

180-200 cm (71-79 in)

Peso

3-4 kg (6.6-8.8 lbs)

Caratteristiche fisiche da controllare

1. 1

   Piumaggio

   Colorazione e disegno generale del piumaggio.

   Predominantly grey body plumage, with white wing coverts, chestnut secondary feathers, and black primary feathers. The most striking feature is the stiff, golden-yellow crown feathers on the head. The cheeks are white, with a prominent red gular sac (throat pouch) that inflates during display. A small patch of black velvety feathers is present on the forehead.

2. 2

   Forma del becco

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

   Relatively short, stout, and dark grey to black, conical in shape.

3. 3

   Colore degli occhi

   Colore dell'iride e segni distintivi sugli occhi.

   Pale grey to blue-grey

4. 4

   Colore delle zampe

   Colore di zampe e piedi.

   Black

5. 5

   Caratteristiche distintive

   Tratti distintivi che separano questa specie.

   Golden crown, red gular sac, white cheek patches, and the ability to perch in trees. The overall grey body with contrasting white, chestnut, and black wing feathers in flight is also distinctive.

6. 6

   Aspetto giovanile

   Come i giovani si differenziano dagli adulti.

   Juveniles have duller plumage, with a brownish-grey body and a less developed, brownish crown. The facial patches are less distinct, and the gular sac is smaller and paler, often pinkish.

7. 7

   Cambiamenti stagionali

   Variazione del piumaggio tra stagione riproduttiva e non.

   No significant seasonal plumage changes. The intensity of the red gular sac may be more pronounced during breeding season due to hormonal influences.

8. 8

   Dimorfismo sessuale

   Differenze tra maschi e femmine.

   Males and females are generally monomorphic in plumage, though males tend to be slightly larger. During breeding displays, the male's gular sac may appear more prominent.

Segni di campo chiave

• Golden Crown. Look for the unmistakable stiff, golden-yellow crown of feathers on the head. This is the most prominent and unique feature.
• Facial Markings. Observe the white cheek patches and the prominent red gular sac (throat pouch) below the chin. A small black velvety patch is on the forehead.
• Plumage Color. Note the overall grey body, contrasting with white wing coverts, chestnut secondaries, and black primaries, especially visible in flight.
• Behavior. Watch for their characteristic upright posture, slow deliberate walk, and their ability to perch in trees, which is unusual for cranes.
• Vocalization. Listen for their deep, resonant 'maa-hem' or 'oom-pa-pa' calls, often accompanied by the inflation of the red gular sac.

Esplora Grey Crowned Crane