The food chain working normally, except perhaps for the location:
— Dave Fawbert (@DaveFawbert) August 4, 2018
The snake was taken to a wildlife facility by the RSPCA, which decided that in fact, it’s a boa constrictor:
“I’m very keen to find out how he came to be in such a dangerous situation,” RSPCA inspector Rebecca Benson said.
“Exposed like that on a street could have meant anything might have happened to him — he could have been run over by a car or attacked by another animal. It might be that he is an escaped pet, or more worryingly, someone may have deliberately dumped him and left him to fend for himself.”
Concern for the pigeon, it appears, was essentially nil.
(Via BBC News.)