Based solely on google searches, it appears the gestation period for sandhill cranes is about 30 to 32 days. They often lay 2 eggs (alternating days) and often only 1 is fertile. There are 2 eggs being watched now (5/22/2012) that were layed on or about 5/4/2012. Parents seem to work jointly on keeping nest high and dry as the nest is in a pond and it's the rainy season so nightly both birds work most the night adding to the nest base. Then one sits on the nest, the other gone somewhere. 30 days would be 6/4... so babies soon due!
No, hermaphrodites cannot self-impregnate. Although they have both male and female reproductive organs, fertilization still requires genetic material from another individual to produce offspring. Hermaphrodites can still reproduce through cross-fertilization with another individual.
Approximately 2-4 months. Occasionally you get one thats longer or shorter, but that's the average.
The gestation period (time of pregnancy) of a tiger is 104-106 days.
A female dog is pregnant for 9 weeks (63 days) from the time of the first breeding. If the pups are born before the 57th day they usually don't survive. She may also go a few days later then 63.
Gestation for wild sheep is about 180 days (compared to 150 days for domestic sheep.)
Moose generally give birth between May and June of each year. Their gestation period is approximately 280 days and it is rare that they give birth to twins.
Guinea pigs pregnancies last for 10weeks
Mink: 40-75 days
Dog: 63 days
Rabbit: 31 days
Chicken: 22 days
Cardinals usually raise two broods of young a year. They mate in March and again from May to July. The female usually lays four eggs. The eggs take about 12 days to hatch. Cardinals usually build cup-shaped nests in small trees, bushes, shrubs and thick vines that are no more than three to eight feet off the ground. Their nests are made of twigs and bark and are lined with grass, moss and other soft materials. Young cardinals leave the nest after 11 days and they can fly within 20 days.
The coyote eats 3 rabbits, a batch of blueberries and 4 baby hares exactly
This is primary information
Spiders have a gestation period of 9-27 days.