Night Heron reported at Sutton Bingham Reservoir this Morning, per Twitter, Great Find

Was there any indication if it was a 1st summer or adult bird ? and where it was exactly ?

Rare Bird Alert message this morning at 07.46 says " adult....at far end of West Pool briefly at 07.35 am."

The Night Heron was found by Tim Farr this morning and seen up to 0735, then apparently glimpsed again at c0900 roosting in the willows at the far end of the West Pool when the wind moved the branches around a bit. Not seen otherwise during the day, but was showing again from 2045 this evening for about an hour, then briefly in flight in the half-dark at 2215, all again on the West Pool from the causeway.