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INCREASING THE ACCURACY OF MAYFIELD ESTIMATES USING KNOWLEDGE OF NEST AGE
Citation:
Etterson, M A., R S. Bennett, AND R. Greenberg. INCREASING THE ACCURACY OF MAYFIELD ESTIMATES USING KNOWLEDGE OF NEST AGE. Presented at 2004 American Ornithologists' Union Annual Meeting, Quebec City, Canada, August 16-21, 2004.
Description:
This presentation will focus on the error introduced in nest-survival modeling when nest-cycles are assumed to be of constant length. I will present the types of error that may occur, including biases resulting from incorrect estimates of expected values, as well as biases that occur due to errors in estimation of critical phase-shifts, such as the onset of incubation, hatching, and fledging. I then present an improved model that uses available information about age of nests to greatly reduce these biases. These results will be based on simulation exercises. I will also provide an applied example using 199 Wood Thrush nests observed during 2000 and 2001 in Central Virginia, USA. The target audience will be field ornithologists activity collecting nest-survival data.