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Rhywbeth fel: Ystlumod ysblennydd Byd yr ystlumod ? Siân > On 9 Aug 2016, at 15:40, Gareth Evans Jones <[log in to unmask]> wrote: > > Gair byr i holi a oes gan unrhyw un awgrym am yr uchod. Dyma’r testun sy’n dilyn y pennawd: > > Join us on a night time walk with a local bat expert. With the help of bat detectors (these machines turn normally inaudible bat calls into frequencies us humans can hear) we’ll hear and see bats in the woodland and riverside. This event will run quite late so may not be suitable for young children. > > > Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10