G'day Everyone,
I've got some questions for all the chicken enthusiasts among us. (are there any???)
I've got an infestation of Caltrop
(link) in my back yard & I’ve been told that getting chickens would sort it out. My brother & I don’t eat a whole lot of eggs, so instead of chooks I got roosters. I’ve had these roosters wandering around my yards for about three months now & they don’t seem to be making much of a dent in the prickles.
My questions are...
Do roosters not forage as much as chooks??
Should I get some chickens to scratch around out there?
Do chickens even eat Caltrop??? (I know most of the TFP readers are American, and I don’t know if this weed grows outside Australia. So I’ve included some photos & a link so you can see what Caltrop is. Maybe it’s even called something different in the USA.)

My Photo of the Caltrop.

Close to the camera is some of my infestation. Further back is just grass.

My little workers.
Anyone know anything??