House martins arrive
Delichon urbicum
Window
Typical: 10 Apr – 10 May (2026)
Lower confidence than swallow — date varies more year to year.
Relevance to fishing
Same signal as swallows but slightly later. Martins flock over still waters in the evening rise.
Phenology chain
No chain links seeded for this event yet.
+ I saw this today
Observation history (0)
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