[Lovebirds]

Don't just lock a pair of birds in a box/cage. The cock will beat up the hen and they can really do some damage.
Do the cocks have their own nest box? Would be good to see the set up you have. Can you lock the nest boxes?
What I do every year is lock each cock in his box. Then I take one hen and put her in the cocks section and let the cock out of his box. He'll chase her a bit, but as long as she can get away, it's ok. After a while, he will begin going to his box and calling her. Eventually, she will follow him. Once they settle down, you can then lock them up and let out the next pair. Just keep an eye on the ones you lock up to make sure the cocks don't get too agressive. Once you've got all the pairs mated up, you can start turning them loose one by one and everything should be fine.
OR........if you have a couple of cages, you can put each bird in a cage and set them side by side and let them pair up that way. You'll be able to tell when they are paired. He will lay down low and coo and she will strut and bob her head.........

 

[Lovebirds]

Renee,

Thanks for the tip. I am thinking of doing the same this year. I've never force mated my birds, but I am planning to do it this year. I don't know what is wrong with my birds, but they prefer to mate with my crosses. Now I am thinking of force mating pure homers together. The problem is that I still don't know yet whether 2 of the birds are actually hens. Two I am sure are cocks because they are now chasing the birds with their tail dragging and puffing necks.

You'll need to remove the old birds that they were mated too, or they'll either go back to the first mate, OR at the very least, squat and let them have their way, and there goes your pure homers....LOL