First cuckoo call

Window

Typical: 15 Apr – 15 May (2026)

Latitude range

50-52°N

Increasingly rare in lowland southern England — absence itself is meaningful data. Log it if you hear it.

Relevance to fishing

Folk marker for 'spring has properly arrived'. Worth logging the date each year — cuckoo populations are declining and the local trend is data.

Phenology chain

No chain links seeded for this event yet.