@Just-passn-thru that is very good advice.
I have lots of littles, and yes they escape, and yes I use nets.
@Lady Jane is exactly right, they are not ideal but what are you going to do? It is unsafe for them to fly around and maybe hit a window, a fan, land on the floor near a dog.... even in the bird room they could simply get caught in something.... and there's a glass-front atrium in there too. So. I do use the net, and it is a moment of stress but compare that to a whole afternoon of stress and I think the score evens out.
Little guys can slide past you so easily. Even when I use my body in the cage door to block, I turn or lean and oops - there went one! Or in the taller custom aviary (it is 7 feet tall, I am 5'3") they go over my head. I have tried many tricks, hold my hand up, hang a towel over the doorway etc. but these things happen.
One of the worst is my female parrotlet. She was hand fed and then left in a cage with no handling. Came here and was terrified of me. She still goes to the highest spot in the room, 9 feet I think. So I have no choice - if she won't go in her cage at lights out, I give her a little while and then I have to catch her with a net. She's slowly becoming more trusting so I know it hasn't set us back *too* much. Would like to avoid it but she is not nearly at a training point yet.