Why wont my canary eggs hatch?

i have 2 canaries, a male and a female, she layd 4 eggs contained by the beginning of november, its been about 5 weeks and still no hatch. i really dnt know what to do, why wont they hatch? shes sitting on them the whole time when shes not eating or taking a bath. Should i a moment ago take them out and forget about it or should i leave them a bit longer?
leave them different birds take different times my copycat took almost 1 year and they hacthed let time flow with birds go it ok well hope that helps can you vote me as a favorite
mayra g,

did you candle the eggs to find out whether there fertile!!

http://www.canarybirds.net/eggs.html

hope this helps email me if you necessitate help!!
Answers:    Please pilfer out the eggs. They should have hatched by now, everyday time is 13-15 days. Your little poor bird must be exhausted .Take them out now, put away the nest and give her a break. She requests extra calcium now and egg biscuits. This is an amazing site for canary owners www.robirda.com. Also if you can buy The Canary Handbook at a pet store.
maybe its two females.. lol
My bird keep getting out of its coop?   Should you cover your pet budgies hold at darkness?   I own a Laying Hen that have wan legs and a yellowish frontage, is this Jaundice or is this middle-of-the-road?   So my wife and I found a chicken and we entail a funny moniker?