http://dailyjournalonline.com/articles/2007/09/05/news/doc46dec4307a0fd384487844.txt
Section 21.43, Title 50 Code of Federal Regulations
states that:
"A Federal Permit shall not be required to control
Red-winged, Rusty, and Brewer's Blackbirds, cowbirds,
all grackles, crows, and magpies when found committing
or about to commit depredations upon ornamental or
shade trees, agricultural crops, livestock, or
wildlife, or when concentrated in such numbers and
manner as to constitute a health hazard or other
nuisance."
Section 21.43, Title 50 Code of Federal Regulations
states that:
"A Federal Permit shall not be required to control
Red-winged, Rusty, and Brewer's Blackbirds, cowbirds,
all grackles, crows, and magpies when found committing
or about to commit depredations upon ornamental or
shade trees, agricultural crops, livestock, or
wildlife, or when concentrated in such numbers and
manner as to constitute a health hazard or other
nuisance."