
Thank you all for your responses. The reason I waited so long to gut them was that I got very sick the night that we did the birds. I was only able to make it through one before I had to go to bed and was laid up for the next couple of days after. Hubby works 12 hour nights with 3 hours driving time round trip, so he was unable to help. So not getting them processed was not by choice.
The first bird that I processed on the day that we butchered smelled just as foul as the other four I did 2 days later. I think SteveH hit the nail on the head. I took the chickens food away the night before. But my kids were so use to feeding them every morning that they went out and did it the day of. I didn't even think about it until I read SteveH's post. bwmichaud was also correct, since they had eaten they had the lovely poo smell.
I had many hands to help with the culling, boiling, and plucking. But since we did it late in the day and when I finally got to gutting the birds, the kids had to go to bed and hubby off to work.
After they were all gutted, washed everything smelled fine and not a hint of stench. They are all nice and cozy in the freezer, cut up and sealed in their freezer bags.
So what I've learned from this...
1. make sure I'm not the only one butchering
2. do it bright and early in the morning
3. and again, make sure I'm not the only one butchering
Thanks again for everyone's input, it was very helpful and educational.