Now, I'm not sure if I'm able to actually do this seeing as I'm a newer user on here, but from what I know of the Mayans, I don't believe the Mayan would have access to a sickle. They do not have the metallurgy to make a sickle like weapon because from that photo User:Samurai234 used, it looks like it's made of metal judging from the rust and Mayans wouldn't have access to metal weapons at their time.
Also, just as a minor note, but the photo of the Mayan Spear User:Samurai234 used is definitely not a Mayan spear. That looks like one of those fantasy spears. Mayans, at least from what I know, should have an obsidian tipped spear.
PS: I'm not sure if I'm doing this right. I'm mostly just doing what others have done, but yeah, I think this match is historically inaccurate.