On the opposite side of organized nests, I vote for Mourning Doves for the most haphazard, half-*ssed nestmakers. They're notorious for disheveled nests which

On the opposite side of organized nests, I vote for Mourning Doves for the most haphazard, half-*ssed nestmakers. They're notorious for disheveled nests which barely stay together, in odd places: https://www.wild-bird-watching.com/images/dove-nest-on-hanging-ladder-21289825.jpg https://www.wild-bird-watching.com/images/dove-nest-on-hangi... https://www.wild-bird-watching.com/images/dove-nesting-on-ladder-21288859.jpg https://www.wild-bird-watching.com/images/dove-nesting-on-la... https://www.reddit.com/r/Ornithology/comments/6i7cwk/dove_laid_an_egg_on_a_clothes_horse_in_our/ https://www.reddit.com/r/Ornithology/comments/6i7cwk/dove_la... We had a pair in a planter box whose nest fell apart so often I ended up reinforcing it for them with some twine when they were away! They came back and had two more sets of babies in the same spot.