did not recommended perches by themselves to reduce bird pest populations specifically.
saw pest birds as well as insect eating birds taking advantage of the perches.
did not think that perches encouraged pest birds to stay perched in an area, noting that perches make pest birds easy targets for raptors.
Click on the green tabs to open or close perch information.
Add man-made structures. Studies have not shown raptors to prefer natural structures over man-made structures using natural materials, and we did not find any studies which compared perches made from synthetic materials such as plastics to natural materials; however man-made structures such as telephone poles, wooden planks and nesting boxes, have been shown to attract raptors.
Minimize or schedule human activity in the field. Perches located in a field with little cover and little human activity may find increased raptor use. Raptors may also adapt to scheduled human activity by using the field when humans are not present.
Take notice of the natural structures already present in or surrounding a field. Raptors may already be using such prime real estate. Natural structures include: old trees, stumps and snags.
Raptors my use power-lines as perches most often in the morning. Morning activity indicates that raptors use perches not only to rest and eat, but also to hunt, as this is when prey species are more active. (Oles, 2007)
One study also found perches to be more successful at drawing in raptors than nesting boxes. (Askham, 1990)
Perches may offer the added benefit of possible rodent and insect management because many nocturnal as well as day-time raptors use perches.
Migratory as well as resident raptors may use perches, suggesting that they can be a year-round biological pest management strategy.
Nesting boxes can be built or placed on the pole or base structure of a perch.
While compiling information for this guide, we did not find any conclusive evidence indicating that perches and nesting boxes increase raptor hunting behavior─ the essential skill for effective pest bird management.
Perches may be less effective when other factors, such as human activity, poor or uninhabitable environment, and season outweigh their presence.