is my coop design ok?

Sounds just like the one I am building now except mine is 18"off the ground because I'm tall less stress on my back getting in and out of bending over and such.

 

Seems a bit on the small side if your planning on having 8 hens. Most people like to allow 4sq ft per hen of coop space and 10 sq ft of run. Plan on where the food and water will go. If you allow them to free range every day, I think your current dimensions would only hold 4 hens. Not trying to be negative. But if you overcrowd, your going to have all kinds of problems including aggression.

 

I agree that it's a little small for 8 birds. If you increase the size if the run, you'd be better off

 

I think you're still too small on your run size.

For 6 birds you'll want a good 60 square feet of run space. I know you intend to free range your birds, but there will be times they need to be confined and you'll want that space so they don't have behaviors due to overcrowding. You'll have predator issues and need to keep them confined, or you'll go on vacation, or want to confine them to train them to lay in the nest boxes, etc. It's always best to plan to have an appropriate area to confine your birds, cause if you don't have it, sure enough something will come up and your birds will be stressed from being overcrowded.

Something else to keep in mind--will you be able to reach inside the coop to catch birds on the roost? That's the easiest way to catch a bird who needs to be inspected or treated, is taking them off the roost at night when they're sleeping. But, you have to be able to physically reach them!

How many roosts are you going to be able to fit in there? You'll need at lest two for that many hens.

I'd make the nesting boxes larger. 1x1 would be fine for a bantam, but my big girls like more space, they won't use the smaller boxes I have.

 

If you're free ranging, then you can get away with a lot smaller coop and run. I'll tell you what we do and you can use this info as well.

65 chickens
Coop is 6'x13' = 78sqft or 1.2 sqft/bird in the coop. Now then, the coop door is only closed on nights that we get below 20F and it's opened first thing in the morning. Otherwise, the coop is always open to the run. BTW, even if we do have a day that stays below 20F, we open everything up. It's only NIGHTS below 20 that they're locked into the coop for extra wind protection.

Run is 30'x13' = 390sqft plus they can get under the coop area. = 468sqft or 7.2sqft/bird.

We free range almost every day. We did once leave them penned up for 7 days in a row and there were no problems. We also pen them up when we start finding too many eggs laid in random places. About 4 days in a row straightens them out and they'll lay where they're supposed(for a while anyways).

For nest boxes we have 4 five gallon buckets and when penned up, everyone uses the boxes so that's plenty of boxes for 60 hens. 1sqft laying boxes are just right.

Scaling this down for you, if you're free ranging most of the time.

10 chickens
Coop is 4x4 or 4x5.
Run totals 70sqft +/-, including area under coop.
2 nest boxes 1'x1'x1'.
10 feet of roost.

colburg

 

Chicken math! Got my first coop this past fall, got my three hens, two weeks later I knew I needed more, they are so dang cute, and they give back! Having fun plannig for the 8x10 chicken palace that I will work on this spring, 12 chicks on order! Woohoo! Have fun!