1. Reflection :
Windows often reflect images of trees, sky and surrounding environment, which can confuse birds. They may mistake the reflection for an actual habitat and try to fly towards it, resulting in a collision with the glass.
2. Transparent Barrier :
Birds have excellent vision but struggle to perceive glass as a solid object. They may not recognize the window as an obstacle and attempt to fly through it as if it were open space.
3. Chasing Insects :
If there are insects near windows or on the glass itself, birds may try to catch them and accidentally hit the window in their pursuit.
4. Territorial Behaviour:
During breeding season, robins might aggressively defend their territory from perceived threats. They may view their reflections as intruders and attempt to attack or chase them away, leading to collisions with windows.
5. Panic and Fear :
Some birds can experience panic or fear when startled or under stress. In such situations, they may impulsively fly away and collide with windows in an attempt to escape perceived dangers.
6. Juvenile Birds:
Young, inexperienced birds might not yet have fully developed spatial awareness and may have trouble distinguishing between glass and open spaces, resulting in collisions.
7. Habitat loss:
As natural habitats are diminishing, robins may venture into urban areas searching for food and shelter, increasing the likelihood of encounters with windows.
8. Lighting Conditions :
Bright lights during the night or indoors can disorient birds, causing them to lose their sense of direction and fly towards windows, thinking it's a source of light or an escape route.
9. Poor visibility :
In certain weather conditions, such as during heavy rain, fog or a heavy snowfall, birds vision can become impaired, leading to increased instances of collisions with windows.
It's important to take steps like deterring tactics like placing decals, shading or nets on windows to help prevent robin collisions and keep them safe.