I power walked and (somewhat lackadaisically) birded Centennial from 
7:15 - 8:30 alone, then Jo Solem joined me and we birded together til 
9:30.  There was a pair of other birders there carrying a scope, but I 
didn't ask their names.

1 Red-necked Grebe in nearly breeding plumage (The 2 unnamed birders saw 
this first and put me onto it; Jo and I got good looks through Jo's scope)
1 Eastern Kingbird (nice sign of spring)
1 Hermit Thrush (3rd time I've seen it in 7 days)
6 Double-crested Cormorants
3 Pied-billed Grebes
1 Ring-necked Duck female
2 Great Blue Herons
Fox Sparrows, White-throated Sparrows, and all the usual suspects

The other 2 birders said they also had a Swamp Sparrow.

-- 
June Tveekrem
Columbia, Howard Co, MD
tweekiebird AT toadmail DOT com