2 warblers are calling out of the reeds in the early morning in the middle of Thailand. The one is a Black-browed Reed-Warbler (Acrocephalus bistrigiceps) this is clear. Checking some older images I stumbled over an Acrocephalus-Warbler, which at the time, I called a Blunt-winged Warbler (Acrocephalus concinens). I shot the image in January 2011 in the Laem Pak Bia Watertreatment plant in middle Thailand. I checked the Helm ID-guide “Warblers of Europe, Asia, and North Africa” and I start thinking due to the streaks on the breast and the thick bill it might have been a Oriental Reed-Warbler (Acrocephalus orientalis) instead. I opened a threat in www.birdforum.com.
Quite shortly, a specialist confirmed the ID with the words “…is indeed an Oriental Reed Warbler. Note in particular combination of grey streaked breast, strong supercilium, rather heavy bill and blue-grey legs.”
In the Laem Pak Bia Watertreatment plant, there are pools designed to purify the water a biological cleaning process with reeds. Continue reading Oriental Reed-Warbler in Laem Pak Bia Watertreatment / Thailand