Mortality Estimates of an Adult Band-Tailed Pigeon Population in Orgeon

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Abstract
In the period 1952-65, 3140 band-tailed pigeons (Columba fasciata) were banded at Nehalem, Oregon, during each May and June when the birds were in prebreeding flocks of adults. These banding efforts averaged 56 new captures per trap-day over the 14-year period. The average annual mortality rate based on 262 recoveries was 28.7 percent. When return data were used to calculate mortality, 687 records indicated a rate of 29.1 percent. Productivity of this population, assuming that the population has remained relatively stable in size, was estimated to be about one young per pair when a 40 percent immature mortality rate was assumed.

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