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Factors Influencing Distribution And Abundance Of The Loggerhead Shrike (Lanius Ludovicianus Migrans) In South-Central Illinois, Eric Lantz Smith
Factors Influencing Distribution And Abundance Of The Loggerhead Shrike (Lanius Ludovicianus Migrans) In South-Central Illinois, Eric Lantz Smith
Masters Theses
The loggerhead shrike (Lanius ludovicianus) is listed as a threatened species in Illinois as a result of population declines that have occurred since approximately 1900. Although Graber et al. (1973) reported that this species had been largely extirpated from the northern two-thirds of Illinois by 1965, there has been no research on shrike distribution or abundance in the state since that time. Consequently, a roadside survey was completed in 32 south-central Illinois counties to delineate the abundance of loggerhead shrikes in the study area and attempt to relate their abundance to land-use patterns among counties surveyed.
Two hundred and eleven …