Herons and Egrets abused by humans?

Egrets and Herons build nests high in
the pine trees near each other. Their
nesting areas are disappearing and
their young are often unwelcome
by some cruel humans.

   A neighborhood in Natomas, near Sacramento, are very concerned that humans are the cause of many fledgling egrets and herons falling and dying.

   The concern is that some human is causing the dozens of deaths in some way because they don't like the droppings the beautiful birds leave on their cars.