A sliding glass door presents an obstacle for birds that can cause serious injury or death. Birds are hurried and territorial creatures which are reasons why they occasionally fly into the glass.
Step 1 - Why Birds Fly
Birds live in quick motion. They have fast breathing and heart rates with body temperatures that are higher than other animals. Taking flight for a bird isn’t always just for pleasure they are seeking shelter from bad weather, good nesting spots, food and water sources, or migrating to a warmer climate. Many times birds are flying to elude a predator. A bird’s diet can consist of insects, worms, fruits, seeds and rodents. Since birds eat lots of seeds, without them earth would be overrun with weeds.
Step 2-Understanding Birds
Birds are territorial especially during their breeding and nesting season which spans from April until the end of August. During this time, birds are diligent about keeping other birds away from their nesting areas. A bird’s vision is extremely sharp. They are capable of seeing ultraviolet frequencies allowing them to distinguish details from a far distance. Birds also can detect more colors than humans and have no blood vessels in their eyes giving them clear vision without shadows and scattering light.
When birds look at a sliding glass door, they’re unable to comprehend that they’re gazing at their reflection instead of another bird. A sliding glass door with the reflection of the sky, trees and shrubs can confuse birds into thinking that it’s an extension of the outdoors. They believe that a sliding glass door is a passage to escape a predator or chase their prey.
Step 3-Birds and Sliding Glass Doors
There are certain species of birds that are more predisposed to flying into glass than others. The most common birds to display this behavior are the American Robin, Northern Cardinal, Northern Mockingbird, American Goldfinch, Wild Turkeys, Thrushes and Blackbirds. Birds that fly into a sliding glass door can momentarily stun themselves, sustain internal injuries, or die from the result of the collision. Flying into glass is an action that the birds demonstrate when they’re building nests, laying eggs, and feeding their offspring.
Step 4-Preventing Birds from Flying into Sliding Glass Door
Stop birds from flying into a sliding glass door by eliminating the possibility of reflecting the outdoors. Hang blinds or light-colored printed drapes on the sliding glass door and keep them closed on sunny days. Check on the outside to make sure that the reflection is reduced. Break up the expanse of glass by applying decals to the doors. The decals can be anything, birds, animals, butterflies, flowers or even a web design.
Move bird feeders away from the sliding glass door so birds don’t have a reason to be near it. Install a screen on the outside of the sliding glass door to prevent the birds from seeing a reflection. For persistent problems throughout the breeding season, temporarily soap the sliding glass door to make it cloudy. Keep house plants away from the front of the sliding glass doors because birds will interpret the vegetation as being outside.