Table 2. Parameter estimates for models explaining variation in territory density (males/10 ha), body condition (weight/wing chord), nest success (based on a reproductive index), pairing success, fledging success (fledglings/10 ha) and site fidelity of White-throated Sparrows in relation to habitat type (clearcut, forest edge, forest interior) near Calling Lake, Alberta, 1998–1999 (1999–2000 for site fidelity). The value t is the result of the independent samples t test; see text for explanation of mixed models analyses used. Parameters were calculated as mean differences in relation to habitat type “clear-cut.” For example, a positive estimate for territory density in habitat type “edge” vs. “clear-cut” indicates that territory density was higher in edge plots than in clear-cut plots. Parameter Estimate SE t P Territory density      Intercept 8.00 1.59 5.04 0.0007      Habitat type (“edge” vs. “clear-cut”) 6.67 2.24 2.97 0.03      Habitat type (“interior” vs. “clear-cut”) 3.33 2.24 1.49 0.19 Body condition      Intercept 0.35 0.005 64.8 <0.0001      Habitat type (“edge” vs. “clear-cut”) 0.01 0.006 1.98 0.05      Habitat type (“interior” vs. “clear-cut”) 0.008 0.006 1.24 0.25 Nesting success      Intercept -1.35 0.38 -3.54 0.0005      Habitat type (“edge” vs. “clear-cut”) 0.69 0.46 1.49 0.19      Habitat type (“interior” vs. “clear-cut”) 1.18 0.47 2.51 0.05 Pairing success      Intercept -0.33 0.29 -1.14 0.26      Habitat type (“edge” vs. “clear-cut”) 0.95 0.37 2.55 0.01      Habitat type (“interior” vs. “clear-cut”) 1.60 0.42 3.83 0.0002 Fledging success      Intercept 2.83 2.05 1.38 0.20      Habitat type (“edge” vs. “clear-cut”) 6.83 2.90 2.36 0.06      Habitat type (“interior” vs. “clear-cut”) 9.50 2.90 3.28 0.02 Site fidelity      Intercept -1.11 0.73 -1.52 0.13      Habitat type (“edge” vs. “clear-cut”) 0.82 0.87 0.94 0.38      Habitat type (“interior” vs. “clear-cut”) 0.92 0.88 1.05 0.34