Model selection table showing binomial mixture models of Aquatic Warbler abundance in Biebrza valley, Poland, from 2011 to 2013.

Models have two components accounting for variation in abundance and detection probability, and all models included a temporal trend parameter on abundance. k = number of estimable parameters, AIC = Akaike's information criterion, ΔAIC = difference in AIC units to the most parsimonious model, ωAIC = relative weight of evidence for each model. Only the best 20 of a total of 45 fitted models are shown, remaining models were not supported by the available data (ΔAIC > 45).