This area is a 'nesting' ground/place/site for seagulls. [=this is a place where seagulls build nests and raise their young]
Their children will soon be ready to 'leave/flee the nest'. [=their children will soon be ready to move away from home]
His comments stirred up a 'hornet's nest' of angry opposition and criticism.
(..) Yeah? Because it's private. Ah, that sounds like a whole thing. I'm not into it. - Mmm. - Shit! I just got stung! That was a hornet! This is a hornets nest! Uh, you know what, guys? Why don't we step in the back office... while Charlie deals with this whole hornet/wasp situation? Yeah. (..)2009 TvShow: It's Always Sunny in Philadelphia Title: The Waitress Is Getting Married Season: 5 Episode 5
(..) What? What? I think I just saw a wasp. I think that was a wasp. You see that? Looked like a wasp. Didn't look like a bee. Is this a wasp nest? This is a wasp nest. I'm out! I'm out! All right. Yeah, yeah. I don't want to tangle with a bunch of wasps. Hey! Do-Do wasps make honey? (..)2009 TvShow: It's Always Sunny in Philadelphia Title: The Waitress Is Getting Married Season: 5 Episode 5