Parameter | Rock ptarmigan | White-tailed ptarmigan | ||||
---|---|---|---|---|---|---|
 | 2004 | 2005 | 2006 | 2004 | 2005 | 2006 |
SY hatched young (female) | 1.34 | 1.21 | 0.90 | 3.25 ± 0.25 | 2.11 ± 0.59 | 1.18 ± 0.43 |
ASY hatched Young (female) | 1.88 ± 0.44 | 1.67 ± 0.43 | 1.07 ± 0.34 | 3.33 ± 0.33 | 2.50 ± 0.59 | 1.50 ± 0.54 |
Juvenile survival (method 1) | 0.40 | 0.48 | 0.18 | 0.41 | 0.17 | 0.14 |
Juvenile survival (method 2) | 0.27 (all years) | 0.27 (all years) | ||||
Adult female survival | 0.67 ± 0.10 | 0.74 ± 0.09 | 0.41 ± 0.09 | 0.58 ± 0.22 | 0.55 ± 0.17 | 0.24 ± 0.10 |