The female Mandarin Duck has been present with the Mallards since at least Saturday (see Covenham thread started by Richard Pipe further down the bird reports page). I'm surprised more people haven't looked for it when taking the Grey Phal and Long-tailed Duck in this week - I'm sure just like me there are quite a few Lincs birders that have seen less Mandarins in the county than Grey Phals and Long-tailed Ducks.
The Mandarin was the 2nd exotic duck of the year on the reservoir for me - a drake Wood Duck was present (also with Mallards) on 23/2/08. I'm not sure how many Wood Ducks have been recorded here & though its origin is likely to be from somewhere much closer than its native North America, it certainly brightened up a cold Feb day!
regards
Chris