I personally,only include a species as a personal first when i have seen the species in questions salient features,and well enough to get my own notes on the bird.Going back to the Amur Falcon at Tophill Low,i have spoken to several experienced birders who saw it,and did'nt know what it was at the time and are now including it on there life lists.The Lesser- Sandplover at Rimac was a prime example,on the day of the bird being found it was mis-identified as a Greater-Sandplover,on the following day it was re-identified as a Lesser so several people had to change there notes,including me

.In cases like this and the Amur it was all down to lack of experience of the species in question,but a big thanks to the guys who stuck there necks out and id'd the species correctly in the end.
Regards
Steve.