Check closer...every once in a while chickens will poop out some really stinky dark brownish almost black liquid...I think it's a discharge from the cecal pouches...they are two extensions of the intestine, they contain helpful bacteria that assist in the chickens digestion...it is very stinky and sticky...and the smell stays with you if you get some on you, even if you wipe it off...you need to wash the area to get rid of it. The rooster may have pooped some out when you picked him up...he could have had some on his feet, and if you handled him the smell transferred to your fingers even if you didn't see anything. I have never heard of or read about male chickens having scent glands...I'm not saying it's not possible...just that I've never heard of them. The only thing that stinks more as far as chickens are concerned...is BROODY HEN POOP!!! Ehhhh! Now that stuff is the most vile, disgusting, "Gag-me" GROSS!!! Stuff that could ever come out of a bird!!! Thinking about it...it's probably due to the cecal bacteria! That could be what makes it stink so much!!! The hen holds her poop for up to a day or more, and only poops when she leaves the nest (hopefully) to take a quick drink, bite of food and maybe a short dust bath...then returns to the nest.