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Reed / bush / grass warblers

Aberrant Bush Warbler

Horornis flavolivaceus

Resident + winter influxHigh timing confidence

Winter influx in Chiang Mai & Lamphun

Seasonal increase beginsNov 14
PeakDec 5
Seasonal increase fadesMar 20
Best windowNov 21 – Dec 19

Habitat

Primary
Dense montane scrub
Secondary
Forest edge, grassy clearings and highland undergrowth
Elevation
Montane

Closest practical Chiang Mai option

Doi Suthep–Pui NP (upper scrub)
~15–25 kmMedium-High confidence

Where to look

  1. Doi Lang
  2. Doi Angkhang
  3. Doi Inthanon National Park
  4. Doi Suthep–Pui National Park
  5. Chiang Dao Wildlife Sanctuary

Timing describes the winter increase, not arrival/departure of the whole local population.

Evidence & sources

1 checklist/site-confirmed; 0 named district/range or recent-record confirmations; remaining slots use habitat + project public-hotspot evidence.

Biological/status source