Breeding pair of Black Guillemots return to the Firth of Clyde (greenock) for the second year, to my knowledge.
No interactions present.
Lat/Lng: 55.960906422963, -4.7777438163757
OS grid ref: NS267776
I have seen frequent feeding around this area and on one occasion observed them flying in and out of a pipeline in the wall of the esplanade. Possible nest site.