14 March 2013

With cooler weather upon us, Bea and Jasper will have to keep their first egg warm. Both parents have a brood patch, an area of bare skin under their breast feathers. Males have a smaller ‘hot-spot' than the females; however, the female ospreys have a larger area with many vessels that can be suffused with blood whenever the egg temperature falls. This instinctive ability allows the ospreys to sense temperature changes within the eggs and to control it within the nest through their own body methods.

Both the male and the female brood the eggs for about 5 - 6 weeks; however, the female does most of it and she relies on the male to feed her during this time.

The average clutch consists of 3 eggs, but 1 to 4 eggs are possible. The eggs are creamy white to cinnamon with dark brown or reddish-brown spots. The eggs are slightly larger than chicken eggs, measuring about 6.2 x 4.5 cm (2.4 x 1.8 in) in diameter and weighing about 65 g (2.4 oz).

12 comments:

Carol said...

It amazes me that Bea shows no outward 'bulge' while carrying these eggs! You go, girl!

Carol said...

Not real happy with Mom and Dad keeping that egg warm! Hope it will be viable.

Mary Elaine said...

I agree about the the parents not keeping the egg
warm. that worries me too!
Elaine

Mary Pat said...

Not to worry. They know what they are doing. All should work out fine. Should see another egg soon.
Mary Pat :)

Carol said...

Is the other mate usually within a 'birds eye' view of the nest when not actually on the nest?

Carol said...

Mary Elaine, just read your profile. Small world. My son is training to do the Hawaii Triathelon on his 50th birthday in 2 years!

Anonymous said...

Wow .. impressed with you Bea, what an early surprise indeed! Looking forward to the next few days!
DB Canada

moderator said...

Carol,

Yes, Jasper is usually on one of the tower antenna's or a nearby tree.

Carol said...

We should see #2 egg pretty soon!

Anonymous said...

Awww, wanted to see if there is another egg, but the camera is stuck at 6:24 and one of the parents is sitting on the egg. Earlier, it looked like Bea was in the "position" to be dropping another egg.

Vivian

Anonymous said...

Yipee, camera back up. Looks like Bea is turning only one egg.

Vivian

Carol said...

Vivian, I thought the same thing!