When my father came down with Dementia I moved him into my house. It was late spring nad he hadn't planted 5 Dalia so I thought I would plant them here so he would have something that was familiar. His walking wasn't so good so I put them on the sides of the walkway to the front door, a full glass door with two glass sidelites.
A month after they started coming up we got a humming bird stuck in our house. The living room has a vaulted ceiling about 20 feet high with the timber frame exposed. Getting the bird out of the house was a real challenge. About a week later we got another one.
After repeating the wrangling a second time I decide to try and find out why all of a sudden they were entering out house. After standing in front of the house looking at the flowers my GF opened the front door. At about a 45 degree angle there was a perfect reflection of a Dalia. Turns out that the door got left open or pushed open by the dogs and the birds got fooled. This year we planted them on the side of the house.