Warbler neck is the sore neck birders get from staring at migrating warblers up in the trees all day.
"Maddy just arrived at High Island, she's been looking straight up, scanning those treetops with her binoculars for hours at a time for Black-throated Green Warblers. It's only a matter of time before she develops warbler-neck."
by hungry-ptarmigan November 14, 2013