Birds range from tiny hummingbirds to giant condors in the skies. These giant birds of prey will have you feeling the size of ...

They weigh in at less than a soda can, and have a wingspan from 15.5 to 29.5 inches ... Their main diet are other small birds, and often they target the most populous species at a site.

However, the smallest aperture – half a wingspan wide – always presented the most difficulty, with every bird zipping through facing forward with their wings pinned back – even on the first ...

A small family pet is outside when a bird of prey swoops down and attacks ... Red-shouldered hawks have an impressive three-foot wingspan, but they weigh less than two pounds. White-tailed hawks can ...