Purple Swamphen – iris and frontal shield

posted in: Morphology-Develop. | 0

Purple Swamphen-5a-Tambun, Ipoh, Perak, Malaysia-18th October 2017

“Had an opportunity for close up images while the Purple Swamphen (Porphyrio porphyrio viridis) was feeding (above). The iris is described as “chestnut to blood red” (Wells 1999).

Purple Swamphen-3a-Tambun, Ipoh, Perak, Malaysia-18th October 2017

“Generally I have seen blood red iris but this is on a ‘distance view’ – see above of the same bird showing this. When seeing it up close you can see that it has 2 colours – blood red centrally and chestnut on the outside. Wonder if this is a transition phase? Barry Taylor in ‘Rails: A Guide to Rails, Crakes, Gallinules and Coots of the World’ notes that juvenile birds have olive-brown iris while adults have red-brown iris.

Purple Swamphen-4a-Tambun, Ipoh, Perak, Malaysia-18th October 2017-1

“Above shows a close up of the frontal shield.”

Dato’ Dr Amar-Singh HSS
Ipoh, Perak, Malaysia
18th October 2017

Location: Tambun, Ipoh, Perak, Malaysia
Habitat: Secondary growth near limestone hills


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