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Comparison of ASRs (males/(males + females)) of green-rumped parrotlets estimated by counts of the number of breeding and non-breeding adults of each sex resighted annually (line) and after correcting for detection probability by dividing each count by the annual sex- and stage-specific (non-breeder and breeder) probability of detection (bars) for the upland population (a) and lowland population (b). Adapted from Veran & Beissinger [2].
