Ynys y Bîg

Coordinates: 53°14′0.7″N 4°9′3.5″W / 53.233528°N 4.150972°W / 53.233528; -4.150972

Ynys y Bîg from the Beaumaris road

Ynys y Bîg is a small private island in the Menai Strait attached to the island of Anglesey (in North Wales) by a short causeway. The causeway runs from the grounds of a private house, itself also called Ynys y Bîg, preventing any public access.

The island lies about 1 mile north-east of the Menai Suspension Bridge. It is heavily wooded and in some years herons nest there in some numbers.