Beyond Mayfield: Measurements of Nest-Survival Data. SAB No. 34 and recruitment

and recruitment

while the seasonal abundance/regional occurrence bar graphs will assist birders in locating regularly occurring species

Color photographs of sites and species will accompany each entry

It identifies the management practices which benefit birds (and those which do not) and addresses the conflict between beneficial activities for birds and the greatest efficiency for the farmer

plus 2 charts and 14 b&w plates

Beyond Mayfield: Measurements of Nest-Survival Data. SAB No. 34 and recruitmentStudies in Avian Biology No. 34. While surveys based on bird counts can measure changes in distribution and trends in abundance, these measurements have limited value in identifying factors that directly regulate populations. In addition, measures of abundance can be poor assessments of habitat quality or habitat selection. Investigations of parameters such as productivity, survivorship, and recruitment, as well as factors affecting these parameters,