Who can give blood. Most people can give blood. You can give blood if you: are fit and healthy. weigh over 7 stone 12 lbs or 50kg. are aged between 17 and 66 (or 70 if you have given blood before) are over 70 and have given blood in the last two years.
Hatching Time For The Eggs. Once you know the eggs have been fertilized, wait anywhere between 22 and 30 days for them to hatch. Once hatched, the only thing you need to do is make sure that the little ones are being fed. You will be able to tell that have been fed by looking at their bellies.
How long after a hummingbird lays its eggs do they hatch? On average, it is between 17 and 23 days that they will hatch after the egg is layed... And it is approximately 21 days (3 weeks) later that the hummingbird chick will first a â¦ ttempt to leave the nest.