Is it legal to kill blue herons?

It depends on the location and specific regulations. In general, blue herons are protected by the Migratory Bird Treaty Act of 1918. This means that it is illegal to kill, capture, or trade blue herons or their feathers, nests, or eggs without a permit.

However, in some specific circumstances, such as to protect crops or livestock, or to defend human life, some jurisdictions may issue permits or exceptions that allow for the take of blue herons. Please consult with your local wildlife agency or conservation officer for the specific regulations in your area.