I have male nosy be that i have had since he was 4-5 months old. at 10months i tried to breed him, and there was nothen, he didnt fire up or head bob what so ever. i tried this for awhile then gave up. then i decided to try him at 12 months still no results,i put infront of my other male nothen was happening even infront of the mirror trick. there was nothen wrongh with temps nothen he was heathy just no desire to want to fire up.so i gave up and was selling him since i was looking for a breeder not a pet. my gf didnt like that but she understood what was needed. so after about a month of no one buying him i try different locations puting his cage beside here trying a differet cage together even puting him into a new cage nothen. then i went out and bought a fake tree a big one put him in there for a whole day by himself. then the next day i put him on the tree for like 10 minutes, and then added my female to the tree.it took him awhile to see her since the tree has alot of coverage. so after like 2 minutes of seeing her, what i thought was impossible my boy started to head bob it was crazy i was yelleing and my gf come look come look. then 30 seconds later the dew was in action. and i finally seen my male nsy be fire up. so i have decide to keep him around since he is one good looking guy when he fires up. hope this helps