Signals

They were having trouble with signals somewhere on the Airedale & Wharfedale lines, so we were ejected from the train at Shipley to await a connection.

Which provided an excuse, not that I needed one, to pop round the back of the station to see if there were any Marbled Whites about. This one obliged soon enough, and one more was flitting round the "Big Field" as I circuited. There were plenty of Ringlet, Large & Small Skippers, Meadow Brown & Small White too.