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CSI Department: Department 10 - Specializeds, Area: Bird Control, Last Customized:07/ 13/2016 Before addition in GSA's library of treatments, documents are reviewed by several competent conservation specialists for basic consistency with the Assistant of Interior Specifications for refurbishing historical structures as understood at the time the treatment is included to the library.


References to items and suppliers are to act as a general standard and do not constitute a federal endorsement or determination that an item or approach is the finest or most existing alternative, remains offered, or is certified with current environmental laws and safety and security requirements. The library of procedures is planned to act as a resource, not an alternative, for spec advancement by a certified conservation specialist.


Specs need to only be applied under the advice of a qualified preservation specialist who can analyze the applicability of a treatment to a certain structure, job or area. References to products and vendors act as general standards and do not constitute a government recommendation nor a determination that a product or approach is the finest option or certified with current ecological regulations and also safety and security standards.


All of the techniques defined below have limited efficiency (see advantages and constraints below) making the selection of an appropriate bird deterrent system challenging. Concerns of aesthetics and principles limit the options even additionally. Vital variables to take into consideration when selecting a bird deterrent system for a specific building include the following: Bird species (including dimension, habits and practices) Area of building Climatic conditions Time of year Time of day Utilized largely for preventing pigeons.

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The wires are sometimes mounted at varying heights in order to come in call with the bird's wings, making comfortable roosting hard. The narrow stainlesssteel pins used for assistance are little adequate to be pierced right into the mortar joints.


In places where this method can not be used straight to the structure, Plexiglas may be used to supply a means of get in touch with. Can last approximately 10 years Eco risk-free Minimal to make use of on walks Not efficient with all varieties of birds (primarily an anti-pigeon technique) An old technique developed initially for farming usage, thenetting system has been adjusted for the defense of structures.




2 fibers: Polyethylene or Polypropaline are recommended to make the netting. Drooping rates up wear and tear as well as makes the system much more visible.


Suitable for large areas Eco risk-free Effective against the majority of varieties of birds Can last up to 15 years Ineffective if there are gaps or holes in the netting. Restricted in its security to specific sections of the building.

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This product is normally utilized on horizontal surfaces such as walks and window sills, where birds are recognized to roost or nest. Easy to install Long life-span Ecologically secure Tend to collect debris check my reference between the spikes such as bird droppings, plumes and also nesting product.


Marketed for listening to ranges above 20K Hz; Used to produce high regularity sounds as a way of hindering birds from roosting or nesting in look at this site certain places (i. e. on structures) Ineffective on the hearing series of birds (which is about the exact same as humans). Birds normally caution other birds of potential danger.




Birds can differentiate between a genuine distress phone call and also a tape recording of one. Distress calls are best matched for use against crowding birds such as starlings which search for a wintertime roost.


Does not obscure the building looks Does not impact, alter or harm the building Sound air pollution: The distress signals are normally extremely loud, hence interrupting the human citizens. There is a possibility of adaptation in the direction of the sound. The results are momentary in that birds might return after the distress signal is transformed off.

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They create an undesirable shock when touched or landed upon. Inadequate. Smaller birds such as Starlings have been known to perch on these wires. Difficult to maintain Difficult to set up. In several instances, installation triggers more damage to the structure because of complex securing as well as linking devices. Also much more tough to remove Unsightly Based on gels of polybutylene.


None. Tends to absorb air-borne contaminants which trigger it to set and also end up being ineffective. Have a short-term performance, lasting from 18 months to 2 years. Elimination is very difficult and occasionally harming to buildings Rubber snakes, glass owls and other industrial devices are placed in critical areas around the building to terrify the birds away.




This system is Click This Link normally not efficient, due to the fact that birds have the ability to identify the artificiality of these devices. A reaction to this system is temporary at best, if there is also a response at all. The birds ultimately become habituated to these gadgets and also may utilize their artificial adversaries as comfy perches.


These tools have to be frequently and repetitively moved from one place to one more There are a variety of chemicals available (listed below). These chemicals are normally discretely sold to specific work places different from residential areas. Avitrol or 4-Aminopyridine: A bird distress causing chemical. The impacted birds give distress signal that scare various other birds away.