The five types of commercially available perch deterrents we evaluated... | Download Scientific Diagram
![Perch deterrents tested: (A) Pupi cross arm, mounted at a 22.5° angle;... | Download Scientific Diagram Perch deterrents tested: (A) Pupi cross arm, mounted at a 22.5° angle;... | Download Scientific Diagram](https://www.researchgate.net/publication/262673135/figure/fig3/AS:614078796013571@1523419202103/Perch-deterrents-tested-A-Pupi-cross-arm-mounted-at-a-225-angle-B-Birdzoff-perch.png)
Perch deterrents tested: (A) Pupi cross arm, mounted at a 22.5° angle;... | Download Scientific Diagram
![Amazon.com : OFFO Bird Spikes Pigeon Outdoor Deterrent Spikes for Cat Keep Birds Raccoon Woodpecker Away Covers 8 Feet(244cm), Brown : Patio, Lawn & Garden Amazon.com : OFFO Bird Spikes Pigeon Outdoor Deterrent Spikes for Cat Keep Birds Raccoon Woodpecker Away Covers 8 Feet(244cm), Brown : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/71j736+jphL._AC_UF894,1000_QL80_.jpg)
Amazon.com : OFFO Bird Spikes Pigeon Outdoor Deterrent Spikes for Cat Keep Birds Raccoon Woodpecker Away Covers 8 Feet(244cm), Brown : Patio, Lawn & Garden
![Amazon.com: Aspectek Stainless Steel Pre-Assembled Bird Spikes 10 Feet (3 Meters), Bird Deterrent Kit with Transparent Silicone Glue : Everything Else Amazon.com: Aspectek Stainless Steel Pre-Assembled Bird Spikes 10 Feet (3 Meters), Bird Deterrent Kit with Transparent Silicone Glue : Everything Else](https://m.media-amazon.com/images/I/71nVBT+S9LL.jpg)
Amazon.com: Aspectek Stainless Steel Pre-Assembled Bird Spikes 10 Feet (3 Meters), Bird Deterrent Kit with Transparent Silicone Glue : Everything Else
![Remiawy Bird Spikes for Pigeons Small Birds Cat,Anti Bird Spikes Stainless Steel Bird Deterrent Spikes-Cover 15 Feet (14 Pack) : Amazon.com.au: Garden Remiawy Bird Spikes for Pigeons Small Birds Cat,Anti Bird Spikes Stainless Steel Bird Deterrent Spikes-Cover 15 Feet (14 Pack) : Amazon.com.au: Garden](https://m.media-amazon.com/images/I/81BKyfU+N5L.jpg)