String fake crows from a Halloween store upside down with their wings out.  Crows will avoid the fake dead crows. You can try using fake horned owls or snakes, but these will only deter the crows for a short while. Crows will even learn the patterns of animatronic animals and recognize that they aren’t real eventually. Laser lights can disturb crows  from their roosts temporarily; however, the crows may return a short time later. It is thought that after continuous harassment, the crows will eventually avoid the area all together. Crows can be frightened by moving shiny objects. You can find bird tape that is designed as a visual deterrent to crows. Hang shiny streamers on poles throughout your yard, or make a fence around your property by twisting the tape together and stringing it between poles along the perimeter. Move the location of your streamers periodically to keep the crows from overcoming them as a threat. Other reflective ideas to try:  Reflective tape Old CDs hung vertically on a string. Aluminum pie pans.  Adding anything shiny to your yard will help to deter the crows. Crows do not like loud sounds such as explosions, loud banging, and alarms; these options, however effective, may be impractical for people in urban settings. Each time you see the crows, make the noise to train them to stay away. Playing a recorded audio of crow predators or crow distress calls can also help keep them away. You can find audio of crow sound deterrents available online at bird control companies. Try these noisemakers to keep the crows away:  Firecrackers Recordings of crow distress calls Recordings of crow predators such as owls and hawks Air horns
استخدم حيوانات مزيفة لطرد الغربان. أشعل شعاعًا من الليزر نحو الغربان. أبعد الغربان عن طريق وضع أجسام عاكسة حول ملكيتك. استخدم الأصوات المزعجة لتنفير الغربان.