Cafwyd hyd i'r aderyn gwyllt, boda (bwncath), yn farw a chafodd ei gyflwyno fel rhan o swmp rheolaidd gan Gorff Anllywodraethol i'w brofi fel rhan o'r mesurau i gadw gwyliadwriaeth ar adar gwyllt.
The wild bird, a buzzard, was found dead and was submitted as part of a regular batch by a Non-Governmental Organisation for testing as part of wild bird surveillance