Existing electrical power lines are dangerous for raptors, especially for young birds. Direct threats to birds are caused also by rock climbing, gliding, and hang-gliding, taking chicks and eggs from the nests.
Existing power lines pose a danger to raptors, particularly young birds.  Threats to birds are also caused by rock climbing, gliding, and hang-gliding, which result in the removal of chicks and eggs from nests.