Used to be well known! 😎
I’m still not clear what you mean - are you just referring to your local migrants? I’m not sure what button you are referring to - perhaps I am being dense here?You said they were increasing. I pressed the wrong button...
You may find this helpful
“Numbers in UK coastal waters appear to be increasing, perhaps associated with a westward shift in their breeding range and migration route”
”In recent years, non-breeding birds have accumulated a growing number in Western Europe, and for the first time in 2016, the little gull has successfully made their home in Great Britain for the Royal Society for the Protection of Birds Reserve, Aberdeenshire’s Latch of Strathbeg Reserve.”
Little gull, scientific name Hydrocoloeus minutus or Larus minutus, is around a small gall that breeds throughout northern Europe and the Palaearctic
Some historical background
Apologies if you were only referring to your local passage of birds, I was referring to them as a species as a whole and as passage migrants in UK waters generally.
(There are certainly shifts in migration which might account for local changes but that’s conjecture)