Where to put winter poopy??

Put up another compost bin. Obviously you're short on space for dealing with your compostables, so make more.

That said, if you're removing 4 inches of bedding that is mostly feces daily I've got to be quite suspicious that your birds are vastly over crowded. I cannot even imagine how that's possible.

 

You can certainly store it in bags. Do you have enough land to have a dump pit? We dig one a year and fill it in. A year later it's great for planting pumpkins and squash. It's also wise to offer deeper bedding in winter simply because it keeps the birds warmer. How many do you have?

 

If you have some annual flower beds, they would be a great place. A corn planting area would also be good. Don't put it anywhere you intend to plant low or hanging fruits or veggies that you eat raw. Also, avoid perrennial beds because the excess nitrogen will stay suspended in the frozen manure until Spring and it will burn the plants and cause huge leaves with no flowers. Definitely avoid squash family planting areas because they suck bacteria right through their roots. Other than that, you should use a dropping board to allow you to collect the manure and leave the litter. At least there would be less volume.

 

I scrape the droppings board and throw it on the compost heap............where the dogs eat it. Maybe I should send you my dogs.

 

If you build a large effective compost heap it should actually generate heat. (All the microbial activity and reactions going on).
If you want to use your compost in the garden you want it to be fully broken down, both by microbes and by worms. Smaller piles are colder and take a long time. Instead of making a sepearate new bin or pile. It may be worth making one very very large pile, and the barriers to hold it in place.

 

I just keep piling it on top. We've pretty much finished collecting all the leaves now. So it will eventually, next spring probably, be turned together for a wonderful rich compost. The girls get in the compost pile whenever they are out and turn it too. What good girls I have!!