how long do penguins stay pregnate?
404307
It depends on the breed of penguin. The emperor penguin has a 63 day gestation period.
84959
You ovulate (release the egg) about halfway through your cycle (day 1 = first day of blood). The egg only lives 1 day.  Sperm can live for up to 5 days.  So you dont want to get horizontal for about a week before ovulation and a few days after.
92470
Baby pigeons are rarely seen as they live in nests and only leave when nearly fully grown.\n\nThe incubatoin period for common pigeons is 17 to 19 days.
910722
a penguin with 1 foot
646374
Basically it works just the same as in other birds. It's a closed system, with a 4-chambered heart, and very efficient pulmonary circulation.\nIn addition, penguins have a special configuration of their blood vessels called _countercurrent_, in which the arteries (with oxygenated blood, extending toward the body surface) and the veins (with deoxygenated blood, going toward the body core) run close to each other, so that the heat from the body passes from the arteries to the veins before reaching the body surface. Thus, this heat is conserved instead of being lost at the body surface.\nThese structures are not found randomly throughout the penguin's body, but especially at their feet, where they represent adaptations for life upon frozen ground. \n\nEmperor penguins  in particular also have adaptations that allow them to dive to great depths. See more at this site:\nhttp://people.eku.edu/ritchisong/birdcirculatory.html
335774
In addition to the great information provided above (especially by Suttkus), I'd like to add that the gestation period of monotremes is extremely short. Their eggs are very small, with leathery (not hard) cover. They're incubated for about 6-10 days close to the mother's belly (whereas echidnas have a temporary pouch). After this very short gestation, the young are born in an extremely undeveloped stage (they look like tiny larvae!) and feed on milk for about 3 months.
622728
Dogs with penguins at a close second...something about the way they waddle around...it's pretty cute.
119824
Biologically speaking they lay eggs in spring because the increasing day length triggers the brain to release reproductive hormones. Those hormones cause the birds to mate, which of course leads to eggs.\n\nEvolutionarily birds lay eggs in spring because summer and autumn are the times of most abundant food: insects, fruit, nuts, mice and so forth. By laying eggs in spring the young birds start flying when there is the maximum  amount of food around. That way they have a few months to learn how to hunt, find berries and so on before it becomes difficult. By the time winter comes they have become proficient at finding food, so even though there is less food around in winter they have become so good at finding it they won’t starve. If eggs were laid in winter or autumn the young would be trying to learn how to find food when food is most scarce and they would almost certainly starve before they learned.\n\nThe abundance of food in spring and summer also make sit easier for the parents to find enough food to bring back to the nest.\n\nSome people will try to tell you that birds nest in spring because they can’t keep the eggs warm in winter. Of course this makes no sense because many penguins lay their eggs right at the very beginning of winter. They do that because the maximum amount of food available in the Antarctic occurs right at the very end of winter and start of spring. By laying their eggs at the beginning of winter the penguin chicks start swimming right when the maximum amount of food is available, just as other birds start flying just when the most food is around.
938809
Absolutely! I already have three of them! :D My hubby brought them home for me because he knows how much I love penguins. He got a very big kiss for that :)
377170
count em up :)\n\nhttp://www.buschgardens.org/infobooks/Penguins/appendix.html
390438
penguins mate for life. May I offer my congratulations. I hope the two of you will be happy together.
19834
Penguins cannot be eaten by Polar Bears, as these birds are endemic to the antarctic and Polar bears are only found in the artic (South and North poles, respectively).\n\nWhen a penguin  does die though, they do decompose, but at a bit slower rate than they would in a warmer climate. Other scavenging animals can also feed on the penguin carrion as well.
365319
About one week depending on the species.
884283
If you mean laying eggs, then they can lay every day if they are well fed and taken care of.\n\nIf you mean incubation period, the egg will hatch in about 21 days.
485474
About 6 to eight weeks
49528
Elephants have the longest gestation of all mammals. Pregnancy lasts about 22 months.
484542
Emperor is the largest penguin and Adele is the smallest.\nEmperor lays one egg, Adele lays 2.\nEmperor nests on the fast ice, Adele nests on the rocky beaches.