The lake is also populated by 200 breeding pairs of Whinchats and 18 breeding pairs of Marsh Harriers.
Whinchat |
Trefil Quarries and Trefil Ddu are noted birding sites; this area is the last remaining site in Gwent where Ring Ouzel occurs regularly, and other species present include Raven, Wheatear, Stonechat, Whinchat, Snipe and Red Grouse.