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Biometrika 1973 60(1):135-140; doi:10.1093/biomet/60.1.135
© 1973 by Biometrika Trust
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An estimator for the size of an animal population

P. HOLGATE

Birkback College London

A method of estimating animal populations which is popular among zoologists is to take the total of the ages of animals that die during a given year as an estimator of population size. In this note the bias and variance of the estimator are investigated for a stationary model, and for one based on a branching process. A numerical illustration is given.

Key Words: Estimation of population • Population dynamics • Branching processes


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