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Topic: 3 species of Acrocephalus warblers at Heilongjiang (Read 710 times) |
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Uncle_Tall
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 I love bird watching!
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3 species of Acrocephalus warblers at Heilongjiang
« on: Jun 7th, 2006, 12:03am » |
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Oriental Reed Warbler東方大葦鶯 A orientalis Thick-billed Warbler厚咀葦鶯 A aedon Black-browed Warbler黑眉葦鶯 A bistrigiceps June 1-2, 2006 Dailing, Heilongjiang, China
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« Last Edit: Jun 7th, 2006, 11:01pm by Uncle_Tall » |
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HF_Cheung
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Re: Acrocephalus warblers at Heilionjiang
« Reply #1 on: Jun 7th, 2006, 11:37am » |
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Dear Uncle Tall, The second photo looks like a Thick-billed Warbler to me. Thick-billed Warbler have a pale lore, no clear supercilum, and a long-tailed short-winged structure. Overall it has a structure that resembles a Strike. Please check. HF Cheung
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Uncle_Tall
BBS Member BBS God
    
 I love bird watching!
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Re: Acrocephalus warblers at Heilionjiang
« Reply #2 on: Jun 7th, 2006, 3:40pm » |
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Thanks Ho Fai. We do think that it is a thick-billed warbler. We have really learnt a lot from this trip. There are also two other external features separating it from Oriental Reed Warbler: 1. Oriental Reed Warbler has black tip in upper and lower mandible. Thick-billed has no black tip in its bill 2. When singing, oriental reed warbler shows red color inside its mouth The vegetation that these 3 birds stay are also different. For the spring song, they may sound similar(ga-ga-gee-gee-ga-ga-gee-gee....) but with the following difference: Black browed - higher pitch and more rhythmic Oriental Great Reed - lower pitch and course Thick-billed - slower beat and shorter Another photo of Black-browed to share:
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« Last Edit: Jun 7th, 2006, 9:08pm by Uncle_Tall » |
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