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Wetland birds
Purple Heron
Ardea purpurea
Resident + winter influxHigh timing confidence
Winter influx in Chiang Mai & Lamphun
Seasonal increase beginsOct 24
PeakNov 28
Seasonal increase fadesFeb 27
Best windowNov 14 – Dec 12
Habitat
- Primary
- Reedbeds / marshes
- Secondary
- Vegetated ponds and flooded fields
- Elevation
- Lowland
Closest practical Chiang Mai option
Huai Tueng Thao
~12 kmMedium-Low confidence
Where to look
Timing describes the winter increase, not arrival/departure of the whole local population.
Evidence & sources
2 checklist/site-confirmed; 0 district/range-record confirmed; remaining slots use habitat + project public-hotspot evidence.