Chickassan
RIP 1975-2022
Works on chickens too, might take quite a bit of time just due to there being so much there on these boys. I'd think it would be a stop and go process due to the heat produced, not to mention the smell. Dremels are absolutely perfect for upkeep though when there isn't so much material to remove. There is just a lot of extra rooster in multiple places here. 

You could also use a dremel tool with a coarse sanding drum, that way when you hit the quick it's a tiny spot of blood easily stopped with cornstarch rather than the gushers you can get when cutting the quick with bladed trimmer. Have never trimmed a chickens nails, but it works with dogs.
'bout spit my coffee out!!