No, not the beloved cock—the post title refers to nesting on rooftops. Humans suck. The millionaire sanctuary known as Bird Key because it was roosting grounds for millions of birds. If those millionaires who stole the land put up potential roosts upon their roofs, they could atone somewhat for their thievery.
Making a proper roof roost would likely entail much trial and error because you need something which wouldn’t damage you roof, and be cosmetic in appearance, be hurricane safe, and be attractive to the birds as well, so only rich people should attempt this feat because it might be costly.
I had to remove a tree so this post came to mind and coincidentally the news showed a video of birds flying in through a chimney and taking over a home. Birds have a good reason to go Hitchcock on us— because humans suck.