Territory Quality, Reproductive Success, and Hunting Behavior of Loggerhead Shrikes (Lanius Ludovicianus)
Territory Quality, Reproductive Success, and Hunting Behavior of Loggerhead Shrikes (Lanius Ludovicianus)

Author: William C. Olson (M.S.)

Publisher:

Published: 2006

Total Pages: 54

ISBN-13:

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The characteristics of shrike nest sites, territories, and hunting perches were analyzed and compared to those of apparently suitable, but unoccupied sites and areas and unused perches. Multivariate analysis revealed no significant differences between used and unused nest sites, territories, and perches (P > 0.19), suggesting that availability of suitable breeding and foraging habitat is likely not contributing to the decline of Loggerhead Shrike populations in central Kentucky. Additional information is needed concerning adult and fledgling mortality, prey abundance, and winter habitat use to provide further insight into factors contributing to the decline in populations of Loggerhead Shrikes.

Non-breeding Ecology of Loggerhead Shrikes in an Intensive Agricultural Region
Non-breeding Ecology of Loggerhead Shrikes in an Intensive Agricultural Region

Author: Emily Rose Donahue

Publisher:

Published: 2020

Total Pages: 92

ISBN-13:

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As intensive agriculture has transformed much of the landscape across central North America, many grassland species have had to learn to adjust these new, highly homogeneous habitats while facing steep population declines. The Loggerhead Shrike (Lanius ludovicianus; hereinafter shrike) is one such declining species that persists in these agricultural landscapes. However, we lack information on the sustainability of these populations, and shrike non-breeding ecology, as for most passerines, remains understudied. Specifically, little is known about non-breeding behavior, diet, survival, site fidelity, and habitat selection. If survival, space use, and habitat selection metrics differ between demographic groups within non-breeding populations also remains unknown. To fill these gaps, we conducted behavioral and diet surveys and banded and monitored shrikes in NE Arkansas from 2016-2019. Our efforts give insights into the foraging strategies and winter requirements of LOSH while investigating demographic partitioning and potential consequences in a partial migrant species.

Species Profile: Loggerhead Shrike (Lanius Ludovicianus) on Military Installations in the Southeastern United States
Species Profile: Loggerhead Shrike (Lanius Ludovicianus) on Military Installations in the Southeastern United States

Author:

Publisher:

Published: 1997

Total Pages: 0

ISBN-13:

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The loggerhead shrike (Lanius Iudovlcianus) is a strictly North American passerine experiencing population declines throughout its range. It is a former candidate for listing as Threatened or Endangered by the U.S. Fish and Wildlife Service. Shrikes are well-known for their behavior of impaling their prey on thorns and barbed wire. There are two subspecies that occur east of the Mississippi River, a resident subspecies and a rarer migrant subspecies. Shrikes breed throughout the southeastern United States, except for the Appalachian Mountain region and the eastern portions of North Carolina and Virginia. Loggerhead shrikes prefer open country, such as pastures with fence rows, old orchards, and mowed roadsides, where they feed on a variety of vertebrate and invertebrate prey. Longleaf pine savannas and open, mature stands of loblolly pine-shortleaf pine also provide suitable habitat for the shrike in the Southeast. Shrikes have been documented and are locally common on several military installations in the Southeast. This report is one of a series of 'Species Profiles' being developed for threatened, endangered, and sensitive species inhabiting southeastern United States plant communities. The work is being conducted as part of the Department of Defense (DoD) Strategic Environmental Research and Development Program (SERDP). The report is designed to supplement information provided in plant community management reports for major United States plant communities found on military installations. Information provided on the loggerhead shrike includes status, life history and ecology, habitat requirements, impacts and cause of decline, management and protection, and inventory and monitoring.