Where birds like to nest

I had a hard time coming up with my blip today. My mood has been pretty low. I hate leaving and have only a long travel day to look forward to.
This horse skull hangs outside the house's door and sometimes in the spring a little bird will nest in the top. Mom has quite a few cow and horse skulls around. I always enjoy seeing the bones.
Now it is about 10 PM and I have a few more hours to wait for my red eye flight.