NICE HAIR, MAN. “You know you’ve made a good catch if your head feathers stand up,” says Rachelle Mack, who captured this shot of a fish-scarfing green heron on Lake Scugog, Ont. That’s right: there’s a green heron. “It used to be called the green-backed heron, for obvious reasons,” says Doug Tozer of Birds Canada. We can’t blame a cottager for never having heard of The Bird Formerly Known as Green-Backed. Its cousin, the great blue heron, gets far more coverage. (Check out the winners of our 2024 photo contest: “Life in Pictures,” Winter ’24.) Green herons, on the other hand, tend to hide from cottage-country paparazzi. “They’re secretive,” says Tozer. They also don’t look much like herons: they’re compact, with short legs and thick necks. Yet, they’re excellent water-wading…