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Providing evidence to improve practice

Individual study: A bundle of management interventions on a farm in Maryland, USA, in 1957 allows the number of bobwhite quail Colinus virginianus coveys to increase from five to 38 in eight years

Published source details

Burger G.V. & Linduska J.P. (1967) Habitat Management Related to Bobwhite Populations at Remington Farms. The Journal of Wildlife Management, 31, 1-12


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Reduce grazing intensity Bird Conservation

A small 1967 study in Maryland, USA (Burger & Linduska 1967), investigated the impact of limiting livestock grazing, as well as other interventions, on northern bobwhites Colinus virginianus and found that the population on the farm increased from five to 38 coveys in eight years. This study is described in ‘Plant new hedges’.

 

Restore or create shrubland Bird Conservation

A small 1967 study in Maryland, USA (Burger & Linduska 1967), investigated the impact of planting areas of shrub, as well as other interventions, on northern bobwhites Colinus virginianus and found that the population on the farm increased from five to 38 coveys in eight years. This study is described in detail in ‘Threat: Agriculture – Plant new hedges’.

 

Plant new hedges Bird Conservation

A small 1967 before-and-after study on a 1,214 ha farm in Maryland, USA (Burger & Linduska 1967), found that after the introduction in 1957 of a number of management interventions, including planting 11.4 miles of new hedges, the number of coveys of northern bobwhites Colinus virginianus increased from five coveys identified in the winter of 1956/1957 to 38 in the winter of 1964/1965. Although this study does not isolate the effect of the individual interventions made, it is noted that 14 of 33 new coveys were located in multi-flora hedges planted during the eight years of management interventions. Interventions included planting shrub lespedeza Lespedeza thunbergii and sericea lespedeza Lespedeza cuneata strips, seeding 20 ha of grassland, and limiting livestock grazing. Sightings of coveys were reported by farm employees and hunting parties during each winter from 1956 to 1965.

Restore or create grasslands Bird Conservation

A small 1967 study in Maryland, USA (Burger & Linduska 1967), investigated the impact of grassland restoration, as well as other interventions, on northern bobwhites Colinus virginianus and found that the population on the farm increased from five to 38 coveys in eight years. This study is described in detail in ‘Threat: Agriculture – Plant new hedges’.