Best Answer: If the Cardinal hasn't return for like over hours the egg may need alot of help. The mother only leaves for a few minutes to eat food but if its really not a good weather bring the egg inside. They're maybe a chance the egg may have died.
https://answers.yahoo.com/question/index?qid=20080428171559AAwOlic
Incubation begins when the last egg is laid, and is performed solely by the female. The male brings food to the incubating female. The eggs hatch after 11 to 13 days of incubation. The female broods the chicks for the first 2 days. Both parents feed the chicks a diet of insects. Both parents also remove fecal sacs from the nest. The chicks begin leaving the nest 7 to 13 (usually 9 to 10) days after hatching.
http://www.experts123.com/q/how-long-does-it-take-for-cardinal-eggs-to-hatch.html
In case your not a 100 percent sure get the egg inside and put in a bowl. cover the bottom and sides with a warm cloth. keep it in a room temperature not too cold or hot. Keep it for a month at least. Sorry but you'll have to do it to save it.
https://answers.yahoo.com/question/index?qid=20080428171559AAwOlic
show more There is a cardinal nest in my yard, and after a long rainfall I noticed there was no Mother or Father at the nest ( which does have one egg) I never scared it away but was wondering if it had been scared away and won't come back or if the Mother just rain to get some earthworms after a nice long rainfall. Can...
https://answers.yahoo.com/question/index?qid=20080428171559AAwOlic
We recently “hatched” three baby cardinals on our back porch. The whole process was so exciting to watch that we took about a million pictures to document it. Because of these baby cardinals our kids have started to tease us just like they teased their grandparents 15 years ago.
http://masterofhort.com/2012/04/baby-cardinals-on-the-porch/
The female northern cardinal builds the nest, incubates the eggs for 11 to 13 days, and broods the altricial chicks for the first 2 days or so. During incubation, the male brings food to the incubating female. Both parents feed the nestlings a diet of insects and remove fecal sacs from the nest.
http://animaldiversity.org/accounts/Cardinalis_cardinalis/
All of these facts were proven out by our three baby birds. They hatched 11 days after the female starting sitting. The first brave baby left the nest on day 9 and the other two were gone when we came home on day 10.
http://masterofhort.com/2012/04/baby-cardinals-on-the-porch/
I have a question; I have a cardinal nest right by my kitchen window in a metal lantern. The nest has 4 eggs in it and the female cardinal layed the eggs around the 10th of April and she is still sitting on the nest and none of the eggs have hatched.
http://masterofhort.com/2012/04/baby-cardinals-on-the-porch/
The female lays 1 to 5 (usually 3) white to greenish eggs that average about one inch in length and one-half inch in diameter. Incubation begins when the last egg is laid, and is performed solely by the female. The male brings food to the incubating female. The eggs hatch after 11 to 13 days of incubation.
http://animaldiversity.org/accounts/Cardinalis_cardinalis/
So, we went to Google and discovered some very interesting cardinal facts. Cardinals typically lay 3 eggs but they can lay anywhere from one to five. The female does all of the incubation and she doesn’t start to sit until she has finished laying. The eggs will hatch in 11 to 13 days after she starts sitting. Once hatched, both the male and female will feed the young.
http://masterofhort.com/2012/04/baby-cardinals-on-the-porch/
how long do cardinals sit on eggs
Cardinals sit on egg for 11 to 13 days, Cardinals sit 11 to 13 days on eggs.