Four Seasons Hotels and Resorts is facing criticism from bird lovers over its plans to build a new resort that would destroy the last stronghold of the critically endangered Grenada dove. In a letter to Four Seasons Chairman and CEO Isadore Sharp, American Bird Conservancy called on the industry leader to either pull out of the project or alter it to protect the endangered dove's habitat. The Grenada dove, which is on the edge of extinction with a total population of less than 100 birds, survives on only a small portion of the Caribbean island of Grenada.