Cara mengidentifikasi House Crow

Untuk mengidentifikasi House Crow (Corvus splendens) dengan benar, periksa setiap fitur ini. Burung bisa sulit dikenali, karena perilaku, habitat, dan panggilan sering mengonfirmasi apa yang tidak bisa dilakukan satu foto.

Ukuran sekilas

Panjang

40-43 cm (16-17 in)

Bentang sayap

76-85 cm (30-33 in)

Berat

250-350 g (8.8-12.3 oz)

Ciri fisik untuk diperiksa

1. 1

   Bulu

   Warna dan pola bulu keseluruhan.

   Overall glossy black plumage, but with a distinctive greyish-brown nape, neck, and upper breast. The rest of the body, including the head, wings, and tail, is a deep, iridescent black. The grey areas can vary in shade from pale ash-grey to darker sooty-grey.

2. 2

   Bentuk paruh

   Bentuk dan warna paruh, tanda lapangan kunci.

   Stout, slightly decurved, and sharply pointed black beak.

3. 3

   Warna mata

   Warna iris dan tanda khas di sekitar mata.

   Dark brown

4. 4

   Warna kaki

   Warna kaki dan jari.

   Black

5. 5

   Ciri pembeda

   Ciri menonjol yang membedakan spesies ini.

   The most distinguishing feature is the combination of glossy black plumage with the contrasting grey nape, neck, and upper breast. Its relatively slender build compared to other crows is also a key feature. The tail is relatively short and square-tipped.

6. 6

   Penampilan muda

   Bagaimana yang muda berbeda dari yang dewasa.

   Juveniles resemble adults but have duller, less glossy black plumage and the grey areas are often less distinct and may appear more brownish. Their eyes may also appear slightly paler initially.

7. 7

   Perubahan musiman

   Variasi bulu antara musim kawin dan tidak kawin.

   No significant seasonal plumage changes. The plumage remains consistent throughout the year, though wear and tear can make it appear less glossy over time.

8. 8

   Dimorfisme seksual

   Perbedaan antara jantan dan betina.

   Males and females are monomorphic, meaning they are visually identical in plumage and size. There are no discernible external differences between the sexes.

Tanda lapangan kunci

• Plumage Coloration. Look for the unique combination of glossy black body, wings, and tail, contrasted sharply with a greyish-brown nape, neck, and upper breast. This bicolored appearance is the most reliable field mark.
• Size and Build. Note its medium size (smaller than most other crows in its range) and relatively slender build. It's not as bulky as a Large-billed Crow.
• Beak. Observe the black, stout, and slightly decurved beak. It's not as massive as that of a Large-billed Crow.
• Vocalizations. Listen for its characteristic harsh, repeated 'kaa-kaa' or 'caw-caw' calls. These are distinct from the deeper calls of larger crows.
• Habitat. House Crows are almost exclusively found in close proximity to human settlements. If you see a crow in a busy urban or suburban area in its native range, it's very likely a House Crow.

Jelajahi House Crow