This morning (11/09/21) over high tide:

Spoonbill, 1 ad
Ringed Plover, c.30  
Curlew, 255  
Black-tailed Godwit, 43  
Knot, c.30  
Ruff, 3  
Curlew Sandpiper, 2  
Sanderling, 1  
Dunlin, c.600  
Little Stint, 3  
Spotted Redshank, 1  
Common Redshank, 5  
Peregrine, 1 ad m, 1 ad f.
Wheatear, 2  

Yesterday 10/09/21 (apologies ofr late post):

Spoonbill, 1 ad
Avocet, 143  
Grey Plover, 2  
Ringed Plover, c.20  
Whimbrel, 1  
Curlew, c.200  
Bar-tailed Godwit, 2  
Black-tailed Godwit, c.50  
Knot, 39  
Ruff, 4  
Dunlin, c.600  
Spotted Redshank, 2  
Redshank, c.5  
Marsh Harrier, 1 imm.
Kestrel, 1  
Merlin, 1 f/imm.
Whinchat, 2  
Wheatear, 4  

Update:

Having downloaded my photos of the tern flock, there was 1 Sandwich Tern and 23 Commons.

Also three colour-ringed Curlews from three different schemes - I will post details once I hear back from teh ringers.

Geoff Suter who arrived a few minutes ahead of me also had a Common Sandpiper.

On a pretty wet morning at Steart, from the Tower and End Hides:

Spoonbill, 1 ad.
Oystercatcher, 1
Ringed Plover, 35  
Whimbrel, 1  
Curlew, c.200  
Bar-tailed Godwit, 3  
Black-tailed Godwit, 163  
Knot, 5  
Curlew Sandpiper, 1  
Dunlin, c.100  
Spotted Redshank, 1  
Greenshank, 3  
Redshank, 3  
Great Black-backed Gull, 59 ad.
Common Tern, 22  
Wheatear, 3