Come identificare Common Moorhen

Per identificare correttamente Common Moorhen (Gallinula chloropus), 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

30-38 cm

Apertura alare

50-55 cm

Peso

192-500 g

Caratteristiche fisiche da controllare

1. 1

   Piumaggio

   Colorazione e disegno generale del piumaggio.

   Adults have dark sooty-grey to black plumage over most of the body, with a brownish back and wings. The flanks show distinctive white streaks, and the undertail coverts are white with a central black stripe. The flight feathers are dark brown.

2. 2

   Forma del becco

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

   Conical, bright red with a yellow tip. A prominent red frontal shield extends from the base of the bill onto the forehead.

3. 3

   Colore degli occhi

   Colore dell'iride e segni distintivi sugli occhi.

   Dark red to reddish-brown.

4. 4

   Colore delle zampe

   Colore di zampe e piedi.

   Yellowish-green, with a distinctive red garter-like band at the top of the tibia (above the tarsus). Long toes are not webbed but have broad lobes for walking on soft ground and swimming.

5. 5

   Caratteristiche distintive

   Tratti distintivi che separano questa specie.

   The most striking features are the bright red frontal shield and bill with a yellow tip, and the white undertail coverts with a central black stripe. The white flank stripe is also a key identifier.

6. 6

   Aspetto giovanile

   Come i giovani si differenziano dagli adulti.

   Juveniles are duller and browner overall, lacking the bright red frontal shield and bill. Their bill is dull greenish-brown, and the frontal shield is small and dusky. The white flank stripe is less distinct, and the undertail coverts are buffy-white without the prominent black stripe. They gradually acquire adult plumage over their first year.

7. 7

   Cambiamenti stagionali

   Variazione del piumaggio tra stagione riproduttiva e non.

   No significant seasonal plumage changes. The brightness of the frontal shield and bill may intensify slightly during the breeding season.

8. 8

   Dimorfismo sessuale

   Differenze tra maschi e femmine.

   Males and females are generally similar in plumage, though males tend to be slightly larger and heavier. The frontal shield may appear slightly larger and brighter in males during the breeding season.

Segni di campo chiave

• Bill and Frontal Shield. Look for the bright red bill with a yellow tip and the prominent red frontal shield extending onto the forehead. This is the most distinctive feature of an adult.
• Plumage Coloration. Observe the dark sooty-grey to black body plumage, contrasting with a brownish back and wings.
• Flank and Undertail Markings. Note the distinct white stripe along the flanks and the white undertail coverts with a central black stripe. These are key field marks, especially when the bird is walking or swimming.
• Legs. Identify the yellowish-green legs with a red 'garter' band just above the knee (tibia). The long, unwebbed toes are also characteristic.
• Behavior. Watch for its characteristic jerky head-bobbing while swimming or walking, and its tendency to flick its tail, revealing the white undertail pattern.
• Vocalizations. Listen for its sharp, explosive 'krrruk' or 'kittick' calls, which are often heard before the bird is seen.

Esplora Common Moorhen