Phoebe made a nest in my overturned canoe..... https://www.audubon.org/field-guide/bird/eastern-phoebe
These Flycatchers favor protected places like under bridges, in barns, in culverts, or in other artificial sites. 
They are one of the first to arrive in Spring to start their nesting. Almost every year a pair will build a nest under my carport. Sometimes they will abandon it for whatever reason. This year they have stayed but I do disturb them every time I have to use my Jeep or just walk in front of the area.