Table 3. Support for candidate models predicting daily nest survival rate (DSR) of 222 thick-billed longspur nests in Valley County, Montana 2020–21. Included are the effects of nest initiation date, nest initiation date2, year, and habitat type (crop, native). The number of parameters (K), AICc values, ΔAICc values, and model weights (AICcWt) are reported.