Table 3 Models examining the relationship between climate variables on the breeding grounds, wintering grounds, and on migration and the apparent annual survival of western yellow-breasted chats breeding in the Okanagan valley, British Columbia, Canada (n = 313 individuals, 461 encounters)
Variables | AICC | ΔAICC | Weight | K |
|---|---|---|---|---|
a. Breeding ground | ||||
 GDDJAN–MAY + precipitationMAY–JUL | 704.09 | 0 | 0.30 | 5 |
 GDDJAN–MAY | 704.34 | 0.25 | 0.26 | 4 |
 GDDJAN–MAY + precipitationOCT–APR | 705.14 | 1.05 | 0.17 | 5 |
 GDDJAN–MAY + precipitationOCT–APR + precipitationMay–JUL | 705.85 | 1.76 | 0.12 | 6 |
 PrecipitationOCT–APR | 707.78 | 3.69 | 0.05 | 4 |
 PrecipitationMAY–JUL | 708.24 | 4.15 | 0.04 | 4 |
 PrecipitationOCT–APR + precipitationMAY–JUL | 708.52 | 4.44 | 0.03 | 5 |
 Phi(.) | 708.67 | 4.58 | 0.02 | 3 |
 Phi(g*a*t) | 774.28 | 70.19 | 0 | 58 |
b. Wintering ground | ||||
 Phi(.) | 708.67 | 0 | 0.44 | 3 |
 PrecipitationDEC–APR | 709.10 | 0.42 | 0.36 | 4 |
 PrecipitationMAY–NOV | 710.28 | 1.61 | 0.20 | 4 |
 Phi(g*a*t) | 774.28 | 65.61 | 0 | 58 |
c. Migration route | ||||
 U-windAPR–MAY | 702.88 | 0 | 0.43 | 4 |
 StormAPR–MAY | 703.43 | 0.55 | 0.33 | 4 |
 U-windAPR-MAY + V-windAPR–MAY | 704.78 | 1.90 | 0.17 | 5 |
 PrecipitationNOV–MAY(ARID) | 708.57 | 5.69 | 0.03 | 4 |
 Phi(.) | 708.67 | 5.79 | 0.02 | 3 |
 PrecipitationNOV–MAY(DESERT) | 710.06 | 7.19 | 0.01 | 4 |
 V-windAPR–MAY | 710.31 | 7.43 | 0.01 | 4 |
 Phi(g*a*t) | 774.28 | 71.4 | 0 | 58 |