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Swallows & swifts

Pacific Swift

Apus pacificus

Winter visitor + passage migrantMedium timing confidence

Season in Chiang Mai & Lamphun

Regular arrivalSep 26
PeakSep 26
Regular departureNov 21
Prime windowSep 26 – Oct 10

Habitat

Primary
Open sky / mountain ridges
Secondary
Highland airspace and migration corridors
Elevation
Foothill–montane

Closest practical Chiang Mai option

Doi Suthep–Pui ridges (passage; ID caution)
~10–25 kmLow confidence

Where to look

  1. Fang Hot Springs
  2. Doi Lang
  3. Doi Inthanon National Park

Prime window marks the stronger detected pulse; a second migration pulse may occur. Taxonomy/field-ID caution: northern checklists may use older Pacific/Cook's Swift treatments; identify carefully.

Evidence & sources

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

Biological/status source