I to went down Yesterday (sorry for late reply Very busy) Btween 1:30 - 5:00 I walked around the resevoir twice.
1 Green Sandpiper
2 Sand Martin
1 Shovler (m) (My first at Covenham)
1 Wheater (f)
2 Oystercatcher
7 Redshank
2 Little Grebe
15 Great Creasted Grebe
7 Cormorant
Around 75 Swallow
4 White Wagtail
15 Pied Wagtail
18 Yellow Wagtail
Around 100 Tufted duck
6 Teal
8 Linnet
Probably More Wagtail numbers, If your on the look out for them you will have more luck in Potato field near the car park, all three species were present there.
_________________
http://anthonybentleywildlifephotography.blogspot.com/UK life list 310 (Harlequin Duck)
Lincolnshire List 246 (Puffin)
Village (Brigsley) list 99 (Shelduck)
Thanks Anthony