|Copyright: Elroyie David (elroyie)
|Date Taken: 2005-05-27|
|Camera: Canon EOS 20D|
|Exposure: f/7.1, 1/800 seconds|
|More Photo Info: [view]|
|Photo Version: Original Version|
|Date Submitted: 2007-07-07 5:23|
|[Note Guidelines] Photographer's Note|
|Black-crowned Night-Heron - Nycticorax nycticorax|
62 cm, 550-800 gr, wingspan 110 cm. Shorter nuchal plumes, legs and lores red during courtship.
Non-breeding adult has cap and back duller. Juvenil spotted and streaked brown, grey, buff and whitish.
Races separated essentially on size and plumage variations, hoactli has narrower supercilium and legs salmon pink during breeding, falklandicus dimorphic with normal and dark morphs and obscurus is darkest race, large and smoky brown underparts.
Fresh, salt or brackish water, areas with aquatic vegetation or on forested margins of shallow rivers, streams, pools, ponds, lakes, swamps and mangroves.
Feeding in dry land and along marine coasts. Roosts in leafy trees: pine, oak, mangroves, etc, or bamboo.
Food and Feeding
Very varied diet, including Fish, frogs, snakes, turtles, lizards, spiders, small rodents, crabs, crustaceans, and eggs and chicks of other species.
Feeds crepuscular and nocturnal but can feed during day.
Passive feeder make use with variety of techniques including "standing", "walking slowly", "hovering" (whereby they fly over the water, pausing in mid-air to capture prey) and "swimming feeding" (a bird will open and close its wing to frighten prey).
Mainly feeds alone and maintains territory.
Colonial, sometimes in very large colonies (5500 nests in Malaysia).
Nest site very variable: trees, bushes, reedbeds, cliff ledges and even on ground. Nest of sticks, rushes, reeds, etc.
3-5 eggs, incubation usually by mfemale 20-22 days. chicks have buffish brown down with darker crown. Sexual maturity at 2-3 years.
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