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Location

Ithaca, New York

Start Date

6-10-1991 12:00 AM

Description

Two commercial (ReJeX-iT® brand) formulations of methyl anthranilate (MA), at concentrations of 0.10-0.50% (0.06-0.32% active ingredient [a.i.]), were highly effective in repelling mallards (Anas platyrhynchos), and ring-billed gulls (Larus delawarensis) from pools of water in pen tests. For mallards, pool entries and bill contacts with water in MA-treated pools were 1.4 and 4.0% of the levels in untreated pools during a 2-choice test, and 4.2 and 8.8% of the levels in untreated pools during a 1-choice test. For gulls, the repellency levels were even higher, with activity levels in treated pools being < 1% of levels in untreated pools during 1-and 2-choice tests. We recommend further pen tests to determine minimum effective concentration levels and a field test to determine responses of free-ranging birds.

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Oct 6th, 12:00 AM

Pen Tests of Methyl Anthranilate as a Bird Repellent in Water

Ithaca, New York

Two commercial (ReJeX-iT® brand) formulations of methyl anthranilate (MA), at concentrations of 0.10-0.50% (0.06-0.32% active ingredient [a.i.]), were highly effective in repelling mallards (Anas platyrhynchos), and ring-billed gulls (Larus delawarensis) from pools of water in pen tests. For mallards, pool entries and bill contacts with water in MA-treated pools were 1.4 and 4.0% of the levels in untreated pools during a 2-choice test, and 4.2 and 8.8% of the levels in untreated pools during a 1-choice test. For gulls, the repellency levels were even higher, with activity levels in treated pools being < 1% of levels in untreated pools during 1-and 2-choice tests. We recommend further pen tests to determine minimum effective concentration levels and a field test to determine responses of free-ranging birds.