Missing Birds

Yesterdays visit to the Baywatch site 1100 hrs.
The first thing I noticed when I arrived at PBP was the absence of activity on the pool. In fact it was deserted..the bottom half of the pool from the deep water sign to the mobile homes was totally devoid of life on the pool or poolside...absolutely nothing . The other end had a dozen Moorhens a trio of Coots and two Canada Geese on the pool and everything else was at the poolside waiting for someone to come along and feed them . This included the Swans plus the two juveniles ,Mallards,Moorhens and Coots. There were no Gulls or Canada Geese (except the two on the water) anywhere on the site. I reckon that would account for at least five hundred birds missing since the same time the previous day.