sulphurs or Light Cahills? Light Cahill Mayfly
Fly Tying: Light Cahill with Uncle John Delaware River Club Online Fly Shop — Sulphur/ Light Cahill/ PED Tying a CDC Spinner by Davie McPhail What the heck is a Cahill? Beginner's Fly Tying Series -- Original Patterns: the CDC Emerger Mayfly The Light Cahill mayfly is heavy on the East coast from late April through May. We enjoy this hatch while fishing the native brook trout streams. ...