AdvertisementSmall Shocks Help Enormous Birds Learn To Avoid Power LinesAugust 30, 2015NPR StafffacebookEmailCalifornia condors have enormous wingspans. That's fine in the wilderness, but when a bird of this size encounters a power line, the results can be fatal. The San Diego Zoo Safari Park has a program to help train birds to avoid the hazard. (U.S. Fish and Wildlife Service/Flickr)