We have Nine Robin nests in our yard.
You're probably thinking "Woa! They must have a ton of trees!"
Cloooooose, but also a mile off. ;)
They decided not to use the trees . . .
See what happened is this: One day a robin started building her nest. Then another female robin saw her and said "Ooooh, what a good idea!" and the second robin started building a nest on the steps as well. This did not agree with the first robin, who chased her off repeatedly. (Which is probably why there's a nest on so many of the steps!)
Eventually, the second robin gave up and built her nest elsewhere.
Also, since she built her nest in view of the window, we got to see how a robin nest is made!
She started by gathering and arranging wisps of dried grass, then (and I never would have guessed that they do this) she plopped down in the nest and fluffed herself out as much as she could- to round it out! Up, down, fluff, up, down, fluff...etc. Each time turning about 90 degrees.
Is that cool or what! =D