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Gestation periods for local wildlife
| SPECIES |
GESTATION |
BIRTH PERIOD |
LITTER SIZE |
YOUNG LEAVE NEST |
| Opossum |
13 days |
Feb.-Nov. |
5-25 Avg.9 |
3 mos |
| Rabbits |
28-30 days |
Mar.-Sept. Peak May-June |
2-10 |
2 weeks |
| Deer |
190-210 days |
May-July |
1-3 |
At Birth |
| Squirrel |
44 days |
Feb.- Mar. Dec.- Jan. |
3-5 |
7-8 weeks |
| Ground Squirrel |
28 days |
May |
7-10 |
6 weeks |
| Chipmunk |
31 Days |
May-August-September |
3-5 |
8 weeks |
| Groundhog |
31-32 days |
May |
2-7 Avg. 4-5 |
9-11 weeks |
| Muskrat |
22-30 days |
Mar.-Sept. |
1-11 Avg. 6 |
15 days |
| Beaver |
128 days |
Apr.-June Peak May |
1-8 Avg. 4 |
At Birth |
| Porcupine |
7 months |
April-May |
1 |
3-4 mos |
| Skunk |
63 days |
May |
2-10 Avg. 6 |
6-8 weeks |
| Raccoon |
63 days |
Mar.-June Peak Apr.-May |
2-7
Avg. 4 |
2 mos |
| Gray Fox |
51 days |
Apr.-May Peak Apr. |
3-5 Avg.4 |
4-5 weeks |
| Red Fox |
51 days |
Mar.-Apr. |
4-9 |
1 month |
| Least Weasel |
205-357 days |
any month |
3-10 Avg.4-5 |
9-10 weeks |
| Longtailed Weasel |
205-337 days |
May-Apr. |
4-8 |
7-8 weeks |
| Mink |
39-76 days |
Apr.-May |
2-10 Avg.6 |
9-10 weeks |
| Otter |
285-300 days |
Apr.-May |
1-5 Avg. 2 |
4-5 mos |
| Bobcat |
50-60 days |
any month |
1 |
autumn |
| Coyote |
60-63 days |
Apr.-May |
5-10 |
3 weeks |
| Badger |
42 days |
Feb.-Mar. |
2-5 |
2 mos |
| Big Brown Bat |
50-60 days |
May-July |
Avg.1-2 Max.4 |
3-4 weeks |
| Little Brown Bat |
50-60 days |
May-July |
Avg. 1-2 Max.4 |
3-4 weeks |
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