Imagine if someone placed rows and rows of pointed spikes wherever you wanted to sit so you just couldn't. Sounds pretty frustrating, doesn't it? Welcome to the world of anti-bird spikes.
Also known as anti-nesting spikes, these man-made inventions are meant to prevent birds from perching wherever humans don't want them to. This can include building ledges, rooftops, garages — basically anywhere someone decided they didn't want to hear birds, see birds, or deal with inevitable bird droppings.
Humans are just the best, aren't we?