About Jacana jacana (Linnaeus, 1766)
Taxonomic Identification
Jacana jacana (Linnaeus, 1766) are conspicuous, easily recognizable birds.
Body Size and Sexual Dimorphism
They measure 17–23 cm (6.7–9.1 in) in total length, with females growing larger than males.
Adult Plumage (Non-Flight)
Adult individuals have a chestnut-colored back and wing coverts, while the rest of their body is predominantly black.
Flight Feather Coloration
When in flight, their greenish yellow flight feathers are clearly visible.
Wing Defensive Features
They also have visible yellow bony spurs on the leading edge of their wings, which they use to defend themselves and their young.
Head and Limb Morphology
Their yellow bill extends upward to form a red coot-like head shield and a reddish wattle; their legs and very long toes are dull blue-grey.
Juvenile Plumage Traits
Juvenile birds initially have entirely white underparts, and can always be identified by the presence of white in their plumage.
