One for the rainy day reminiscing members, I was reading kb57's 2020 thread: https://www.birdforum.net/showthread.php?t=385208
and was tickled to see he had recently seen some Dartford Warblers in Surrey, 48 YEARS after his last sighting of the species! Naturally that got me thinking, what was the biggest gap between sightings of a same species for me? So how about you ?
Let's keep it to the country we normally bird in (otherwise those 'just twice in a lifetime' foreign trips would skew things somewhat).
Despite my 'senior' status as the French call it I can't beat KB's 48 year gap, I had a gap of 29 years (I think) between sightings of Grey Phalarope (1965 Somerset, 1994 Scillies).