Figure 3From: The impact of West Nile virus on the abundance of selected North American birdsComparison of unrestricted impact estimates from different models for American Crows, by state. Autoregressive CF = Autoregressive counterfactual method; Loglinear Ex = Loglinear extrapolation method; Autoregressive Ex = Autoregressive extrapolation method. Panel (a) represents the year after the highest WNNID incidence in a state; panel (b) represents 2010.Back to article page