dirty water
Submitted by Anonymous on Sun, 2010-07-11 10:40.The algae on that pond is killing everything in it. There will be no oxygenation for anything to survive underneath, this will cause fish to die. Any fish eating birds like herons will then take young ducklings as they will be strarving. Although ducks eat algae when it is this thick their babies cannot swim in it and tend to water log and drown... See more.
Ducks need an island between them and the banks of any pond or lake as a safe haven at night. This stops preditors including our best friend the dog from disturbing and attacking.
http://skegnessvideo.com/2009/06/baby-duck-stranded-in-waterway-algae/