I'm so sorry you had to experience that, but don't beat yourself up over it. *I* thought my elderly dachshund would not kill chicks or chickens, and I was wrong. Just a little inattention and I lost 3 chicks, each at separate times.
My bathroom is my Nursery, with the brooder in there. The bathroom door only opens outward, so the dogs (and my cats) can't paw/push it open to get in to the chicks in the brooder. I have to be very vigilant about closing and securing that door, as well as not letting ANYBODY slip by me when I enter or exit the bathroom. No matter HOW sleepy I am at the time.
I even replaced the chicks, so I ended up with 3 different ages in the brooder, about a week to a week and a half difference each time. So the youngest was almost a month younger than the first few I bought.
They're happy, healthy 19 - 23 week old pullets now.
My bathroom is my Nursery, with the brooder in there. The bathroom door only opens outward, so the dogs (and my cats) can't paw/push it open to get in to the chicks in the brooder. I have to be very vigilant about closing and securing that door, as well as not letting ANYBODY slip by me when I enter or exit the bathroom. No matter HOW sleepy I am at the time.
I even replaced the chicks, so I ended up with 3 different ages in the brooder, about a week to a week and a half difference each time. So the youngest was almost a month younger than the first few I bought.
They're happy, healthy 19 - 23 week old pullets now.