The puffin sightings are the latest in a long line of positive signs of the impact conservation management has been having on the island.
Annual surveys have begun to record steady increases in eider ducks, guillemots, herring gulls and lesser-backed gulls on and around the island, year on year.
It is not known for certain that the puffins seen this year managed to successfully rear a chick.
But Mr Crory is staying positive.
“Our hope is that the Isle of Muck will become a thriving stronghold for puffins and, in time, tempt back other lost species like the Manx shearwater.
“For now, we’re waiting with great excitement to see if the first ‘pufflings’ – baby puffins – appear on the cliffs next summer.
“That truly would be the icing on the cake.”