Use of Lethal Control to Reduce Habituation to Blank Rounds by Scavenging Birds

Andrew T. Baxter; John R. Allan

doi:10.2193/2007-458

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Andrew T. Baxter,^1,* John R. Allan²

¹aBird Management Unit, Central Science Laboratory, Department for Environment, Food and Rural Affair
²bBird Management Unit, Central Science Laboratory, Department for Environment, Food and Rural Affair

^* E-mail: a.baxter@csl.gov.uk

Abstract

Scavenging bird deterrence frequently fails due to habituation. We demonstrated such habituation by gulls and corvids to blank rounds used in a dawn-to-dusk regime at a landfill site in southern England. We then combined blank rounds with live rounds and shot birds whenever they attempted to land. Gull numbers declined significantly despite only 1.9% of the population being shot. Corvid numbers returned to precontrol levels despite 52.7% of the population being shot. We suggest that shooting reduces gull habituation to blank rounds but is ineffective at reducing habituation by corvids.

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Andrew T. Baxter and John R. Allan "Use of Lethal Control to Reduce Habituation to Blank Rounds by Scavenging Birds," Journal of Wildlife Management 72(7), 1653-1657, (1 September 2008). https://doi.org/10.2193/2007-458

Published: 1 September 2008

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blanks

corvids

Deterrence

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habituation

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