five weeks
Osprey, Pandion haliaetus, is a member of the Family Pandioninae. There is only one species of Osprey found worldwide. This fascinating raptor plunges into water for fish, the only raptor that does. Ospreys are medium-large raptor, measuring 21-24.5 inches long with a 4.5 to 6 foot wingspan. Eggs and incubation Female Ospreys begin to lay their eggs in late April. The eggs are beautifully blotched reddish-brown and are about the same size as a large hens’ egg. They are produced at two-day intervals: Novice breeders will usually lay two eggs; experienced pairs lay three or very occasionally four. The average turkey will lay 110 to 115 eggs in a 28/30 week period.   The gobbler's sperm is stored in the hen's oviduct, so that fertilized eggs may be laid up to fo … ur weeks after mating. The osprey typically mates for life. It usually lays two to four eggs within a month. It typically takes about five weeks for the osprey's eggs to hatch. Osprey Facts. Breeding Age at first breeding: 3-5 years Number of eggs: Usually 3 Size of eggs (mm): 62 x 46 Incubation period: 35-42 days Fledging period: 53 days. First migration By late August or early September, the young Ospreys leave their nest sites and head south on their first migration. They will usually lay an egg each day up to about 5-7 eggs. Depending on when the hen begins to incubate them in earnest (usually after the second or third egg is laid) you can expect them to begin hatching after about 15-17 days. You will need to beef up their diet and begin feeding them some soft foods.
http://www.newyorkwild.org/osprey/osprey_info.htm http://www.ospreys.org.uk/osprey-facts/ http://www.answers.com/Q/How_long_between_mating_and_egg_laying_of_osprey http://www.answers.com/Q/How_long_between_mating_and_egg_laying_of_osprey http://www.ospreys.org.uk/osprey-facts/ https://au.answers.yahoo.com/question/index?qid=20070914015741AALapgn
how long for an osprey to lay eggs after mating