Brent numbers reduce - tide height related?

Pale-bellied Brent 26 feeding out from children's play area on flooding tide (PM).They had gone by 13:00, possibly to Red Nab, not sure if anyone checked. This is still a high number for this area, but significantly down on the high counts on the +9m tides earlier in the week.

Mediterranean Gull 1 near play area.

Middleton Nature Reserve
Mute an additional 7 adult so 11 adult plus 5 juvenile
Gadwall 32
Coot 2