Little Spiderhunter – juvenile characteristics

posted in: Morphology-Develop. | 0

“Saw a pair of juvenile Little Spiderhunters (Arachnothera longirostra cinereicollis) still being fed by parents (below).

SpiderhunterL-jv [AmarSingh]

“Note the fully orange beak and feet which is different from what is described in literature.

“Wells 2007 describes the lower mandible in juveniles as ‘yellowish pink’ and the feet as ‘pale pinkish’. Other sources describe juveniles as ‘paler bill and feet’ (e.g. HBW 2018).

“And a few that show orange feet and bills as in the birds I saw today (some in transition), see examples: LINK and LINK.

“I suspect that the orange phase is in recently fledged birds which then progress to a darker upper mandible, followed by lower mandible and feet.”

Dato’ Dr Amar-Singh HSS
Ipoh, Perak, Malaysia
16th January 2018

Location: Ipoh, Perak, Malaysia
Habitat: Secondary growth at city fringe

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