Bird-watching enthusiasts visiting the Lost Gardens of Heligan to catch sight of the native-American bird, which has taken up residence in the Lost Valley, have brought an 11% increase in visitor numbers.
Marketing manager Lorna Termayne said: "Seeing a hundred or more birdwatchers huddled around the Lost Valley has been quite a spectacle in itself and I would just like to thank everyone who has visited for their patience with each other and the respect that they have shown for both the wildlife and the gardens."
Managing Director Peter Stafford commented: "The Green Heron and the interest it raised is a fantastic example of Heligan attracting and being respectful of rare and precious wildlife, and creating excitement about nature in a unique way."
Birdwatchers Theresa Nichols and Anona Warford from North Devon ditched plans for a birdwatching holiday in Mullion and went to the Lost Gardens instead after hearing about the Green Heron.
Nichols said: "It’s the first time we have seen a Green Heron and we are pleased to get some great views and lovely images, enhanced by the lovely weather."