In reply to Fredt:
The little patch of woodland at Glan Dena has a mix of common species and they sometimes have feeders out giving photo opportunities.
Woodland at the bottom end of the Nant Ffrancon, between where the back road meets the A5 and Ogwen falls, has green woodpeckers, Redstarts and pied flycatchers.
Many of the upper cwms have Ring Ouzel territories.
The valley floor around Blaen y Nant is the Welsh stronghold for Twite.
There's usually a Raven around Twll Ddu / Y Garn that will come within a couple of metres for peanuts, and sometimes Chough around the summits.
Otherwise it's pretty much Mippits, Wheatear and Wrens.
Post edited at 23:09