29 April 2012

Yesterday, Saturday, April 28th, marked the beginning of the 5th week since the first egg was laid. Incubation is anywhere from 5 to 6 weeks so the first chick could hatch any time now.

In the last few weeks, Jasper has been bringing in quite a few large bass. If that trend continues, we shouldn't see the chicks go hungry. If the chicks don't receive enough food,  aggression between the chicks will intensify and can be hard to watch. That is a completely natural, wide-spread and adaptive behavior.  Chicks hatch over a span of many days, and so there can be a large difference in size among the siblings in the same nest.  This is called “hatching asynchrony.” They are covered in down when hatched. 

Bea is constantly up and down over the eggs as of this post so the first egg could possible hatch today. The first chick hatched on the 40th day in 2011 and in 2009 it was the 38th day.

18 April 2012

'Oldest' breeding osprey lays 62nd egg at Loch of the Lowes

Wonderful video of osprey catching fish

13 April 2012

An "intruder" osprey that has been flying about landed on the platform this morning while both Bea and Jasper were at the nest. Both parents quickly dispatched the other osprey with Bea giving chase and Jasper covering the eggs.

For several weeks we've noticed that our pair has been bothered by another osprey in the area. This may or may not be the same bird.

12 April 2012

The nest finally has a nice "bowl" shape. Both Bea and Jasper have been bringing in material which has made the nests appearance much more presentable in the past few days. Today marks the 20th day since the first egg was laid so we are about half way through the incubation period. If our pair continues to improve their nest they should be off to a great start when the chicks hatch. 

Bea and Jasper seem to have a nice rhythm going with incubation. Jasper is bringing in fish and giving Bea a break from sitting on the eggs. Not much time is spent off the clutch of eggs as they must be kept warm. So far Bea and Jasper are doing a great job.

11 April 2012

Not much going on at the nest. Bea and Jasper are taking turns incubating the eggs while both are bringing in a few sticks, grasses, and an occasional pine cone.
The osprey cam viewing time has been increased to 7:00 a.m. to 8:15 p.m.

10 April 2012

More photos have been added to the gallery.

06 April 2012

With the cooler wet weather Bea and Jasper will have to make sure that their eggs are kept 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. The eggs must be kept at a temperature of around 99 degrees Fahrenheit.

04 April 2012

We just added 15 photos to the 2012 gallery. More to come soon. 8-)

02 April 2012

The incubation process began on March 24th when the first egg was laid. The second egg was laid March 26th and the third, March 29th. Bea will take on most of the responsibility of incubation, seldom leaving her eggs except to feed. Jasper will then take over incubation until Bea returns. Incubation takes anywhere from five to six weeks.

Jasper with eggs, April 2, 2012

When it's time for the osprey chicks to hatch, the first chick has a definite advantage over its siblings which hatch a day or two later.  The first chick grows quickly and most likely will dominate the nest.  If the food supply is low, the dominant first chick can seize the available food supply to the danger of the smaller siblings. This insures that at least one of the year’s brood might survive. Some of the sibling rivalry can be a bit intense as they all try to receive food from their parent.