Swift Foxes and Ideal Free Distribution: Relative Influence of Vegetation and Rodent Prey Base on Swift Fox Survival, Density, and Home Range Size
Table 1
Seasonal home ranges and core use areas for male and female swift foxes in 6 study sites located on and around the Piñon Canyon Maneuver Site, Colorado, 2001–2004.Parentheses indicate sample sizes of foxes that were identical between home range and core use.Total ranges are presented as SE.
Site
Sex
Home range (95%)
Core use (50%)
Dispersal
Breeding
Pup-rearing
Dispersal
Breeding
Pup-rearing
PRV
M
10.46 (9)
11.03 (2)
6.86 (5)
1.56
1.12
0.86
F
7.55 (6)
7.32 (5)
4.89 (11)
0.75
0.64
0.72
BTS
M
16.28 (5)
16.69 (10)
14.04 (7)
1.99
2.00
2.11
F
12.34 (4)
9.03 (7)
10.39 (6)
1.39
1.16
0.92
PRN
M
15.94 (5)
14.71 (3)
11.09 (5)
1.58
1.54
1.29
F
17.33 (6)
6.65 (4)
6.33 (6)
1.88
0.87
0.60
RRK
M
13.14 (1)
8.98 (1)
6.35 (3)
0.78
0.56
0.75
F
18.03 (1)
6.69 (1)
6.32 (3)
1.82
0.62
0.68
BNT
M
—
31.79 (1)1
—
—
4.131
—
F
—
—
—
—
—
—
COM
M
7.65 (3)
6.27 (4)
4.93 (4)
1.03
1.19
0.60
F
5.64 (3)
2.82 (2)
2.27 (3)
0.49
0.40
0.24
Total
M
12.63 ± 2.0
12.23 ± 1.6
8.36 ± 1.0
1.47 ± 0.3
1.53 ± 0.3
1.04 ± 0.2
F
11.40 ± 1.8
7.54 ± 1.5
6.48 ± 0.9
1.19 ± 0.2
1.01 ± 0.4
0.66 ± 0.1
1Throughout the study, only one animal remained and/or survived on the Bent site throughout a full season.This animal was believed a transient, though it met the requirements for calculating a seasonal home range.
