Mourning Dove

I always hear very different bird-singing in morning. The sound is like hooooOOhh-whoo-whoo-whoo. Maybe you heard this sound too. I always wonder which bird is singing like this?

The answer is mourning dove!

You can click the link below, there is a 'Play' button on the page, you can click and play the sound.
http://www.allaboutbirds.org/guide/mourning_dove/id

If you heard this too, that means there are mourning doves around your house.

I saw two around our home too. They are very puffy, light brown/gray color. Their eye ring color is like very light blue or very light green. Hard not to notice it since they blink often and a bit slow.