In the 60's & 70's, there was a cannery on Airport Road. There were seagulls everywhere. The DOT used carbide cannons to scare away birds. The gulls would squabble over roosting rights on the barrels of these cannons & get "thrilled" when the cannons would go off!  JAL Cargo, on departure from 6L, sucked a gull thru an engine. They said they were going thru the USSR if Alaska did not do something about the birds! As I had worked in the Aleutians a few years fishing, I had learned seagull "psychology". So I told the Airport Chief, that I could get rid of seagulls. He said, "Do what you need to, just get rid of those "Fl**ying birds!" I checked out a shotgun, went down to the end of 6L, where a large shallow pond was &  a lot of nesting going on. I shot 5 gulls & hung them by their necks from strategically positioned  stakes around the area. Soon the air was filled with squawking gulls. About 30 min. later, no seagulls to be seen! That's when I found out what an "Environmentalist" was...