From a hidden bird call to a hidden bird altogether, an observant angler near Pennsylvania's Lake Redman spotted what looked like a clump of drift feathers caught in a tree, only it was a threatened black-crowned night heron desperately in need of help.
The sighting set off a coordinated rescue involving a wildlife warden and the local fire department, who worked the bird free from a tangle of fishing hooks and monofilament line. By the time it was handed off for recovery, the heron had gone from an easy thing to miss to the whole reason everyone showed up.
See the full piece over at The Dodo here.