feeder

Filter feeders are everywhere in the animal world, from tiny crustaceans and certain types of coral and krill, to various molluscs, barnacles, and even massive basking sharks and baleen whales.

It can then be used to automatically control access to squirrel feeders - with only reds being allowed into those containing food, and only greys into those where food has been replaced with contraceptive paste.

The mollusks are efficient filter feeders and can increase the clarity of water by consuming large quantities of plankton, which native fish and other creatures depend on.

The court also heard the bird feeders had been refilled and plant pots had been moved.

But when feeder came calling, they ambled up to the side of the tank and turned their jets away.