With real estate, it often comes down to location, location, location. So I have heard.

Some years ago, I did landscape maintenance work for a housing development. The gardens of the 5-6 model homes were kept in prime condition to encourage sales, so I worked there often. A (dim-witted?) Anna's hummingbird decided to make a nest in the potted tree at the entrance to the last model.

That would have been fine, except she was very protective of her nest and would angrily buzz and swoop every potential customer that came near! (And me too, but at least I was aware of the nest!) Because almost all of the visitors were there for the first time, there were many, many surprised victims all day long. I would try to warn the customers when I was working in the area, because the sales people never seemed to, but it was an impossible task. More often I would just hear startled shrieks throughout the day.

There had to have been a steady stream of customers while she was constructing the nest, so I cannot guess why she thought it was a good location. Other than the abundant amount of flowers. Silly bird. But she did manage to fledge her young, and did not return the following year. I imagine her stress level must have been off the charts. Even for a hyper-hummingbird.