Aloha,
I have that problem too in the past when I raised chicks. If it is a first time mother hen (at least on my end) they are quite irresponsible with predators. I lost a lot of chicks. But the mama Hens would wise up. Some before the next chick was hunted. But for my hens it was trial by error. You know what they say survival of the fittest. But what you are doing by locking them in the coop is a start. Here is how I changed it so I do not loose too much chicks.
Options:
1) I would isolate the family until the bitties are strong with alot of feathers on them. Also supervising the outings so they are protected.
2) Have a run that is chick proof and Predator proof until they are almost feathered.
3) Allow a Rooster (if it is allowed in your area) out with the hen and babies to warn the hen & chicks of danger.
4) Catch the cat and take it to the animal shelter. Or you can feed it and habituate it if you need a mouser.
5) Scare the cat away with a shot of water, or the super soaker. (well that is what I have seen the neighbors use on naughty cats)
But these are just suggestions so i hope they help cause it will help a little if not more. When the mother hen decides to lay again she my reject the chicks and then they need protection again for a little.
I have that problem too in the past when I raised chicks. If it is a first time mother hen (at least on my end) they are quite irresponsible with predators. I lost a lot of chicks. But the mama Hens would wise up. Some before the next chick was hunted. But for my hens it was trial by error. You know what they say survival of the fittest. But what you are doing by locking them in the coop is a start. Here is how I changed it so I do not loose too much chicks.
Options:
1) I would isolate the family until the bitties are strong with alot of feathers on them. Also supervising the outings so they are protected.
2) Have a run that is chick proof and Predator proof until they are almost feathered.
3) Allow a Rooster (if it is allowed in your area) out with the hen and babies to warn the hen & chicks of danger.
4) Catch the cat and take it to the animal shelter. Or you can feed it and habituate it if you need a mouser.
5) Scare the cat away with a shot of water, or the super soaker. (well that is what I have seen the neighbors use on naughty cats)
But these are just suggestions so i hope they help cause it will help a little if not more. When the mother hen decides to lay again she my reject the chicks and then they need protection again for a little.