Dato’ Dr Amar-Singh HSS of Perak, Malaysia, sent in images of Tiger Shrikes (Lanius tigrinus) on 14th September 2009 with the following comment: “I have often seen wintering migrant Tiger Shrike at the Kledang-Sayong Forest Reserve in Perak, Malaysia. Three birds were spotted this season, on 12th September 2009. These are the first I have seen for this season (none there last week). These are the 1st winter birds.
“What is puzzling is the buff colouring that is present in the undertail-coverts in the bird (left, bottom), compared to a normal bird (left, top). Such colouring is not a feature of Tiger Shrikes.”
Another Malaysian birder, Lim Kim Chye, has this to say: “Never seen this odd plumage before … bird appears to be immature, based on plumage. I’m just as curious to know if there’s anything about this in the literature.”
KC Tsang, a local birdwatcher-photographer, when informed of Amar’s observation, produced his images showing similar buff-colouring (below), adding: “My first picture (below) also shows buff colour, one with more, the other with traces of it, maybe as the bird gets older the buff gets less and les…”