Name That Bird — Costa Grande

Field notes

The homepage organizes the game into three geographic rounds: Costa Grande, Guerrero and its sierra, and southern Mexico. Players match bird photographs with names under a countdown, earning 100 points for a first-try match, losing 25 for a wrong guess, and receiving five points per second left on a cleared board. The page attributes the field photography to William Mertz and says later rounds introduce altered rules, including a deliberately false name and a bird without a name.