Birds love quiet, sheltered corners—under loose tiles, inside small gaps near beams, or behind poorly sealed edges. If you repeatedly see them flying to the same roof edge or corner, carrying twigs, there’s probably a comfortable gap there.
While birds themselves aren’t always a problem, the gap they use might also let in water, insects or even rodents. Nesting material can block drainage paths and create mess or smells.
Observing these patterns and then checking those spots more closely can reveal small openings you might not have seen otherwise. Sealing them properly keeps both your roof and the wildlife a little safer—birds can find better, non-structural places to nest.