The information in this profile may be out-of-date. It was last revised in 1996. EXTOXNET no longer updates this information, but it may be useful as a reference or resource.

Please visit the National Pesticide Information Center (NPIC) to find updated pesticide fact sheets. If you don't find a fact sheet related to your question, feel free to call 1-800-858-7378. NPIC is open five days a week from 8:00am to 12:00pm Pacific Time.


Extension Toxicology Network

Pesticide Information Profiles

A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program.

EXTOXNET primary files maintained and archived at Oregon State University

Revised June 1996


Trade and Other Names: Common names include 4-AP, P-aminopyridine, Gamma-aminopyridine, Amino-4-pyridine. Trade names include Avitroland and Avitrol 200.

Regulatory Status: Based on its potential hazard to fish and non-target birds, some 4-aminopyridine formulations are classified by the U.S. Environmental Protection Agency (EPA) as Restricted Use Pesticides (RUPs). RUPs may be purchased and used only by certified applicators. Grain bait formulations of 4-aminopyridine are in toxicity class III and must bear the signal word CAUTION and powder concentrate formulations are in toxicity class I and must bear the signal word DANGER.

Chemical Class: pyridine compound

Introduction: 4-Aminopyridine, a pyridine compound, is an extremely effective bird poison. It is one of the most prominent avicides. It is registered with the EPA for use against red-winged blackbirds, blackbirds in agricultural fields, grackles, pigeons, and sparrows around public buildings, and various birds around livestock feeding pens. Avitrol repels birds by poisoning a few members of a flock, causing them to become hyperactive. Their distress calls signal other birds to leave the site. Only a small number of birds need to be affected to cause alarm in the rest of the flock. After one alarming exposure, birds will usually not return to treated areas. Avitrol is available as grain baits or as a powder concentrate.

Formulation: Avitrol is available as grain baits or as a powder concentrate.

Toxicological Effects:

Ecological Effects:

Environmental Fate:

Physical Properties:

Exposure Guidelines:

Basic Manufacturer:

Avitrol Corporation
7644 East 46th St.
Tulsa, OK 74145


References for the information in this PIP can be found in Reference List Number 10

DISCLAIMER: The information in this profile does not in any way replace or supersede the information on the pesticide product labeling or other regulatory requirements. Please refer to the pesticide product labeling.