They are numerous and annoying along the coast and near their breeding and natural feeding sites such as flood plains of swamps, streams and rivers and around ponds, salt marshes, and beaches.
(They; are; numerous and annoying along the coast and near their breeding and natural feeding sites such as flood plains of swamps, streams and rivers and around ponds, salt marshes, and beaches)
They
are
numerous and annoying along the coast and near their breeding and natural feeding sites such as flood plains of swamps, streams and rivers and around ponds, salt marshes, and beaches