counting coots

It seems that the Wandsworth Bridge Starlings get together a little up river before moving in as there were a couple of thousand on the dump waste transfer station this evening.




In my recent travels criss-crossing the river over the past couple of months I've noticed Starling activity on other bridges. Tower Bridge has some, as does Battersea Bridge (a similar construction to Wandsworth Bridge - the Starlings roost underneath remember) and there have been a couple of other dusky encounters.



The question is - are all (or the majority) London Starlings roosting on the bridges over the Thames? With 4500 regular under Wandsworth Bridge, it isn't too much of a stretch to extrapolate that up to the 10,000 mark for the whole city. If I wasn't moving out I may have considered trying to get counts for each of the bridges over the course of the winter, but that may have to wait for later in life.