I keep pet birds, and currently have some quite unusual and exotic birds in an aviary which has a lockable house inside it. They are not very old, and still need a bit of protection so they spend the day in the run and on a night they are locked in their house. I have been recuperating from surgery this week and my mum came to help out. She's been putting the birds to bed each night. Over the course of the week 2 of the birds have been killed in their run by a predator. The house is predator-proof, the run is not as it is too big but it is generally safe during the day. My DD opens the house each morning but while we were discussing how on earth they could have been killed as the birds have been in their house overnight, DD said that the house had actually been open every morning this week and she thought my mum had opened it. When I asked my mum about it she said she hadn't opened the door, but she hadn't been closing it properly and locking it either. She thought I was over-exaggerating about the predator risk and also the door was a bit sticky so she thought it wasn't normally closed.
The relationship between me and my mum is a difficult one, so I didn't say anything because I knew anything at all that I said at this point would be wrong. However she's accused me of being ungrateful for her help out while I was out of action, and pointed out that birds generally don't (in her opinion) live long in my care. We do lose the odd bird or chick to predators which is not unusual when you free range birds and my birds do usually free range during daylight hours. Most of my birds live a natural life span, we have several very ancient chickens atm.
I've been told 'it's not like someone didn't shut your pet dog away resulting in it being killed. They are only birds.' But I'm upset about it, and DD is devastated. We'd had them since they were newly hatched and they are apparently fragile chicks and difficult to raise, but they were nearly half adult size and growing really well. Because of the breed they are I won't be able to replace the lost birds until next summer. AIBU to be upset about my dead birds?