Wildfowl & Wetlands Trust (WWT)

Still sitting…

Our resident Ospreys are still sitting tight on their two precious eggs despite the wilder turn of the weather- in fact such cool and stormy conditions are when their diligence is most important to keep the eggs warm. For those of us viewing the live nest camera on site though, the high winds rocking then nest back and forth can make you feel a little seasick! Despite being exposed to the elements Ospreys almost always prefer such high tree top nesting sites – prefferably with 360 degree views- for security.

Both birds have again been sharing incubation duties, and the male this morning seemed very reluctant to hand over to his mate on her return- he is certainly a proud father, or perhaps just too comfortable sitting snug on the nest.

Interestingly we have not been seeing the male bring many fish back to the nest- instead the female seems to be fishing ,at least partly, for herself during her turns off the nest. This will change though as soon as the chicks are hatched , when all responsibilty for keeping the family fed will fall on the male.

Another two weeks of waiting to go…

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Third week of incubation

We are entering the third week of incubation of our two osprey eggs here at WWT Caerlaverock. The eggs are incubated for an everage of 37 days and during that time our adult birds will diligently turn and rotate them regualrly to ensure even developement for the embryos inside. It is amazing to watch these big birds walk around the nest with their huge talons curled in under their toes to avoid breaking the eggs. Both adults have been taking turns with incubation duties- the male is just as willing it seems to sit on the eggs, which is not the case in every Osprey pair. Thier vigilance is essential not only to ensure an even temperateure for the eggs but to protect them from opportunistic predators during this period.

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Incubations continues

Our ospreys are happily incubating their two eggs on the nest today and no doubt enjoying the beautiful spring weather. The eggs were laid on the 19th and 22nd of April and it now looks unlikely they will be joined by a third egg this year, as it has been more than a week since the second was laid, which is usually the maxmium gap between eggs.

However, two eggs is still a great outcome and most welcome as this is a relatively young breeding pair, and every Osprey born here in Dumfries and Galloway potentially helps these still vulnerbale birds recolonise their historic range. If both eggs hatch the two chicks will stand a very good chance of both surviving to fledging as there should be plenty of food to go around.

Osprey eggs hatch between 35 and 42 days after laying, with a pretty reliable average being 37 days. Some quick calculations reveal therefore that the earliest possible hatching date for egg one would be the 24th of May, but more likely the 26th, whereas egg two could hatch as early as the 27th, but more likely around the 29th of May.

Meanwhile the parent birds continue to be dedicated and vigilant as the eggs must be kept constantly warm and protected from opportunistic predators during the long incubation

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