Northwest berry Foundation

PERCHES

Growers interviewed for this project...

  • noted that perches seemed to draw in raptors.
  • 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.


  • 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.

  • Not all raptors hunt from perches.

 

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