Installing Perches for Birds of Prey
This involves installing perches in the plots with a minimum height of 2 meters. They can be installed in larger diameter metal tubes, so they can be temporarily removed to avoid obstructing equipment passage.
Authors:
| Julien Halska | INRA | julien.halska(at)grignon.inra.fr | Epoisses (21) |
| Rémy Ballot | INRA | remy.ballot(at)grignon.inra.fr | Grignon (78) |
Presentation
Characterization of the technique
Description of the technique:
It is advisable to avoid installing perches near roads, railways, or power lines, which could cause mortality of raptors. Furthermore, to promote the regulation of rodent populations by raptors, the use of rodenticides should be avoided, as it either directly leads to poisoning of raptors through the food chain or eradicates their prey.
Implementation period On established crops
Spatial scale of implementation Plot
Application of the technique to...
All crops: Easily generalizable
All soil types: Easily generalizable
All climatic contexts: Easily generalizable
Effects on the sustainability of the cropping system
"Environmental" criteria
Other: No effect (neutral). No information was found on water and air pollution by rodenticides.
"Agronomic" criteria
Productivity: Increasing
Rodenticide use generally begins when populations are already high and damage is observed. Installing perches before these population peaks helps prevent them and maintain the population at an acceptable level. Yield losses can therefore be avoided.
Functional Biodiversity: Increasing
Installing perches directly promotes the presence of raptors. It is even more effective when accompanied by the cessation of rodenticide use.
"Economic" criteria
Operating costs: No effect (neutral)
Costs related to installing perches and using rodenticides can be considered negligible.
Margin: Increasing
In situations where rodent populations can no longer be effectively controlled with rodenticides and cause significant losses, installing perches can have a positive impact on profitability.
"Social" criteria
Working time: Increasing
Perches can be an obstacle during field operations (e.g., spraying). They can be installed in larger diameter metal tubes to be temporarily removed during passages. They also require additional working time during installation.
Favored or disadvantaged organisms
Bioagressors disadvantaged
| Organism | Impact of the technique | Type | Details |
|---|---|---|---|
| rodent | pest, predator or parasite |
Favored auxiliaries
| Organism | Impact of the technique | Type | Details |
|---|---|---|---|
| Raptors | Natural enemies of bioagressors |
For more information
- Perches for raptors - Hans Schmid, Swiss Ornithological Station / Swiss Association for the Protection of Birds, Technical brochure, 2004. Link to the brochure
Keywords
Bioagressor control method:
Mode of action: Action on the initial stock
Type of strategy regarding pesticide use: Efficiency Redesign
Appendices
S'applique aux cultures suivantes
Favorise les auxiliaires
Défavorise les bioagresseurs suivants
