User:Fátima Varea

ANIMAL RIGHTS

Birds are unable to perceive glass as an obstacle, they are guided by the reflection of vegetation or sky and also, if conditions permit, they can see what is behind the glass and because of its transparency they look like a tunnel through which to pass to the other side; therefore, it is not uncommon for them to fly at full speed and hit glass panels.

Daniel Klem Jr., one of the people who has studied and published the most about the problem of bird-to-window collisions, created a rule called “the 10 by 5 cm rule.” this means that an appropriate solution to avoid shocks must consist of ropes or objects, 10 cm apart if they are placed vertically or 5 cm apart if they are placed horizontally. Many bars comply with this rule, so they may not only make the house safer, but also prevent bird crashes. Given that many small birds, such as hummingbirds, are victims of collision, it is recommended that the distance between ropes, gates or adhesives be at most 8 cm.

Solution: Vertical cords or ropes placed 8 cm apart.

Advantages: Economical, durable, easy to maintain, do not block the eye, allow the entrance of light, are esthetic and very effective

Process: The ropes must be placed on the outside of the window and must be sure that the distance between them is not more than 8 cm. If placed more than 8 cm, the number of collisions could increase as birds could try to pass between the ropes.