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Difference between revisions of "African Jacana" - BirdForum Opus

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The African Jacana (Actophilornis africana) is a jacana. The jacanas are a group of waders in the family Charadriidae, which are identifiable by their huge feet and claws which enable them to walk on floating vegetation in the shallow lakes that are their preferred habitat.  
 
The African Jacana (Actophilornis africana) is a jacana. The jacanas are a group of waders in the family Charadriidae, which are identifiable by their huge feet and claws which enable them to walk on floating vegetation in the shallow lakes that are their preferred habitat.  
 
African Jacana breeds throughout sub-Saharan Africa. It is sedentary apart from seasonal dispersion. It lays four black-marked brown eggs in a floating nest. The males, as in some other wader families like the phalaropes, take responsibility for incubation.
 
African Jacana breeds throughout sub-Saharan Africa. It is sedentary apart from seasonal dispersion. It lays four black-marked brown eggs in a floating nest. The males, as in some other wader families like the phalaropes, take responsibility for incubation.
 
Breeding: Often polyandrous; one female may lay 7-10 clutches/season at intervals of 4-21 days. Season: All months in tropics; mainly October to April in S Africa. Nest: Small secondary pad, 5-20-33 cm diameter, of plant stems at water level or up to 2 cm above water level; placed on top of primary pad about 50 cm diameter, anchored to submerged or floating vegetation; new material added as nest sinks during incubation; eggs may be moved up to 1 m to new site if water level changes. Clutch:  2-5 eggs (92% of 4 eggs, rarely 5); female may lay up to 27 eggs/season (average of 1 clutch every 17 days). Eggs: Pointed at narrow end; deep tan-yellow to brown, rarely rufous or khaki, heavily streaked, scrolled and dotted with black.
 
 
Incubation: 22-26 days by male only; starts with third egg; when sitting, male holds eggs off wet nest by folding wings under body. Fledging: 35-40 days (up to more than 75 days); chicks highly precocial; cared for by male which may carry small chicks under wings when threatened; chicks swim and dive well.
 
 
 
 
The African Jacana's food is insects and other invertebrates picked from the floating vegetation or the water’s surface
 
Molluscs, crustaceans, seeds, water lily bulbs.
 
  
 
==External Links==
 
==External Links==
 
{{GSearch|Actophilornis+africanus}}  
 
{{GSearch|Actophilornis+africanus}}  
 
[[Category:Birds]]
 
[[Category:Birds]]

Revision as of 19:11, 15 March 2008

Actophilornis africanus
Photo by IvoZafirov
Photographed: Lake Victoria, Uganda

Identification

These are conspicuous and unmistakable birds. They are 30cm long, but the females are larger than the males. They have chestnut upperparts with black wingtips, rear neck and eyestripe. The underparts are white, with a chestnut belly patch in adult birds. The blue bill extends up as a coot-like head shield, and the legs and very long toes are grey.

Identification: About size of bantam; long-legged, with very long toes; body rich chestnut; hind neck black; fore neck white (conspicuous at distance) grading into golden yellow on breast; bill and frontal shield pale bluish. Immature: Similar to adult Lesser Jacana, but much bigger; above light brown (dark brown in adult Lesser Jacana), below white; breast washed golden (no gold in adult Lesser Jacana); flanks brown; frontal shield small (not visible in field); crown and hind neck blackish brown (crown rufous in adult Lesser Jacana); black line through eye; buff eyebrow (eyebrow of adult Lesser Jacana white, forehead buff). Measurements: Length 25-30 cm; wing 143-156-180; tail 38-56; tarsus 56-68; culmen 47-58 (variable in size; female usually bigger than male). Weight (male) 115-132,8-162 g, (female) 176-238,3-274 g. Bare Parts: Iris dark brown; bill and frontal shield pale grey-blue; legs and toes slate grey.

Distribution

They are found worldwide within the tropical zone.

Distribution: Africa S of Sahara; in s Africa mainly absent from dry W and highveld, except as vagrant (Bloemfontein, Mariental, Keetmanshoop, Okahandja, Kalahari Gemsbok National Park).

Taxonomy

Habitat

Behaviour

The African Jacana (Actophilornis africana) is a jacana. The jacanas are a group of waders in the family Charadriidae, which are identifiable by their huge feet and claws which enable them to walk on floating vegetation in the shallow lakes that are their preferred habitat. African Jacana breeds throughout sub-Saharan Africa. It is sedentary apart from seasonal dispersion. It lays four black-marked brown eggs in a floating nest. The males, as in some other wader families like the phalaropes, take responsibility for incubation.

External Links

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