AITA for being frustrated that my husband did nothing at home while I was taking our kids to the zoo ALONE

33F married to my 40Myo husband. 2 kids, 2 and 4

My 4yo had an excursion to the zoo this morning. My husband is scared of birds so he didn't come. I left at 9.15 - the house was a pigsty. I got home at 2.30pm - the house was the same as when I left. Not only that but he took himself for a haircut and beard trim at 1pm, and then to the gym at 2pm, where he remains now at 4pm.

He thinks im being horrible and that he should be entitled to "put his feet up" because hes just been away at work for 8 days. Ive just worked part time, managed the house and taken care of our 2 kids alone for 8 days with no support - when do i get to put my feet up?

Am i being unreasonable in thinking he should have gone to the gym and got a haircut while we were at the zoo? He spends 8 days away from his kids a fortnight, you'd think hed want to spend time with them when they get home.