|Copyright: Donald Lapointe (hibou)
|Date Taken: 2007-08-11|
|Camera: Nikon D100, Sigma 50-500 F/4-6.3 EX HSM|
|Exposure: f/6.3, 1/320 seconds|
|More Photo Info: [view]|
|Photo Version: Original Version|
|Date Submitted: 2007-09-15 8:54|
|[Note Guidelines] Photographer's Note [French]|
|I know this picture would need more sun shine but ... I'm pride to have been that close of this bird. |
Size : 56 à 69 cm
Wingspan 116 à 118 cm
Weight 690 à 1600 gr
Longevity 16 years
Sexes are similar in plumage, but male is slightly larger than female.
Juvenile is similar to adult, but it lacks glossy feathers.
Common Raven is very vocal. According to different purposes and social contexts, it utters varied series of calls and non-vocal sounds. It may utter from 15 to 30 kinds of vocalizations. Usual calls are alarm calls, chase calls, and others to defend territory. They are high-pitched and raucous "praaak-praaak" in flight.
They are able to mimic other animals' sounds, but they only can utter a wide diversity of calls, and create sounds resembling other species' calls.
Common call is a deep "croak" or a hoarse "rrronk", and a knocking "tok-tok-tok".
Non-vocal sounds are wing whistles and bill snapping.
Common Raven communicates by vocalizations, but also by physical displays. Common Raven has an agile and powerful flight, making rolls and elaborate movements in flight. It may fly upside down for one kilometre.
It lives in North America except in south eastern part, Asia, Northern Africa and Europe. It is one of the most widespread in the world.
Defends strongly its young, chasing predators away while calling.
Able to learn solutions to newly encountered problem.
Female lays 3 to 7 pale bluish-green or olive-green eggs, blotched with dark olive-brown. Incubation lasts about 18 to 21 days, by female. She is fed by the male while she incubates. Chicks hatch altricial, with sparse down. They are fed by both parents, by regurgitated food and water stored in a throat pouch.
Now, they are protected and populations in North America are increasing all across their range.
Raven has often played important roles in cultures, mythologies and writings.
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c'est très difficile d'avoir des détails sur un corbeau. Et pourtant, tu as réussis. Félicitations!
Très beaux détails du bec et du plumage et belle composition.
- [2007-09-20 9:06]
Belle composition.Je susi d'accord tu as fait un travail superbe dans l'obtention du details dans le plumage du sujet.