During spring and fall my birds are busy molting.  When my ducks molt, they loose the wing feathers that I have clipped and get a full set of feathers.  Then they start to fly around and land on buildings.
Here are some funny pics of muscovies all over the place.

 This hen is on top of my hubby's shop.  The roof is at least 20 ft tall!

These two are on top of chicken coops.  They love to look down at you as you walk by, like "What are you doing down there?"  ha ha