Police seized 20 vehicles including quad-bikes and scramblers after the convoy of more than 50 bikers took part in the tribute to Kyrees Sullivan, 16, and Harvey Evans, 15.
BirdWatch Ireland and members of the BRIDE Project arrived at a farm in Glenville on Tuesday morning to investigate a barn owl nesting site and to tag any chicks at the location.
A police officer is being criminally investigated for dangerous driving after following two teenagers on an e-bike in Cardiff moments before they died in a crash.