Nest stealer - how can I stop it?

[ranoutofquinoa]

I know we'll get the usual horrid feline destruction, we usually get mice, voles, birds, rabbits etc however one of mine has taken to getting into nests and bringing us eggs or tonight tiny baby birds. I have one which is still alive in a shoe box. (Fingers crossed for the morning) she's just brought it's sibling in which hasn't made it.
She has a very loud bell on her collar but that's not going to help a very new born bird.
Any suggestions? Should we keep her in Dawn and dusk?

Sorry. Didn't want to hit and run. However, just wanted to empathise.

Oh no, that's awful. Is it possible to block access to where the birds are? I know it's a natural thing for them to do, but I'd be keeping her in as much as possible, especially overnight, at dawn and dusk, when there are a lot of baby animals around at this time of year.

Keep her in. It's the only way to stop her killing.

I would keep her in at night regardless of the killing, it's safer for her to be in.