The estimated proportion of adult Atlantic Puffins that would not attempt to breed each year, if the estimated population decrease on Fair Isle (λ = -0.03) were to be caused entirely by permanent or intermittent non-breeding and consequent failure to observe surviving individuals.

The estimated proportion of adult Atlantic Puffins that would not attempt to breed each year, if the estimated population decrease on Fair Isle (λ = -0.03) were to be caused entirely by permanent or intermittent non-breeding and consequent failure to observe surviving individuals.

在费尔岛种群预估下降量（λ = -0.03）完全由永久性或间歇性不繁殖行为，以及由此引发的存活个体无法被观测所导致的假设前提下，每年未尝试繁殖的成年大西洋海雀（Atlantic Puffin）所占的预估比例。