Original sentence: Seabirds have proved particularly difficult, and this has led some observers to criticise the committee for setting too high a standard.The committee has received additional criticism for its approach to assessing records where only one observer was present, for not publishing reasons for record rejections, and for putting undue weight on detail when assessing bird descriptions
Edited sentence: Seabirds have proved particularly problematic, and this has led some observers to suggest that the committee sets too high a standard.The committee has been criticised for its approach to assessing records where only one observer was present, for not publishing reasons for record rejections, and for putting undue weight on detail when assessing bird descriptions