Well, I was taking flowering tops off my basil last night and just tossed them into the chicken run since I didn't have enough to make setting up the drier worth it and didn't have an immediate use for fresh basil.
They don't really like it.
Fresh weeds are their green of choice.
Similar - made a batch of pesto after topping the flowers/seeds from a bunch of basil. Neither the goats nor the chickens expressed much interest. Ended up tossing on my chicken tower (an idea I can't claim credit for - @Phaedra Geiermann was my inspiration), though mine is more squat and larger in diameter. [mistakenely beleived it to be 4' tall by 4' dia, but its closers to 3' x 3' dia]. Queue jokes about men and measurements - in my defense, it seemed bigger when i was shovelling dirt into it.
My birds to eat the tops of scallions and garlic - but it may be that they are eating the bugs at the tops of the onions, scallions, garlic and other alliums, and only getting the green plant material by mistake.
The flock benefits from acres of free range pasture, and a large run, but I do periodically take logs, limbs, etc from my work underbrushing and move them into the run, stacking them so they have perches, hideouts, etc - and the run is large enough that they've not destroyed all of the varied foliage, for more entertainment value.