Birds Making Nests In Gutters. Downspout returns are the perfect spot for birds to build a nest. Swallows have nests that are mud-built the shape of half a bowl usually found under the eaves.
They build their nests using small mud pellets that they collect from nearby ponds streams and puddles. Simply put bird nests clog gutter systems on your home. Not only do nesting birds often disrupt your sleep but the nest area quickly becomes a health concern with lice and accumulating bird faeces.
These clogs prevent water from moving through the system and down the vertical spouts.
If birds frequently nest near your home and you want to get rid of them humanely you have many options. When a bird builds a nest in your gutter system they will essentially be creating a clog. This not only keeps birds from building nests in your gutters it keeps birds away period. A bird nest built in a vent roof or gutter can seriously damage them.