Ospreys

Ospreys are Spectacular fish-eating birds of prey with a wingspan of nearly five feet. Find out more about Ospreys with our Osprey Fact File or check out the BBC’s Osprey web page.

Other Cumbrian bred Ospreys

As osprey numbers rise we can expect to see an increase in the number of pairs in Cumbria, although this is a slow process as only about 3 in 10 naturally survive to adult hood.

For the last 5 years YW, our 2008 male chick, has bred  successfully at Fowlshaw Moss, with broods of healthy chicks.

Another of our male chicks has been breeding in South Scotland for a number of years.

In 2010, one of the Bassenthwaite chicks from 2007 bred with another un-marked Osprey and laid eggs in South Cumbria but unfortunately none of the eggs hatched, not unusual for young inexperienced Osprey pairs. The pair were later seen on the coast nest building in late Summer, which is known as frustration behaviour, and often occurs after an unsuccessful breeding season.

An Osprey believed to be another Bassenthwaite chick from  2007 was seen regularly around the Thirlmere area during 2010 but since then there have been no sightings.

Osprey nestOther Great Places to See Ospreys

Cumbrian Ospreys History

In 2001 a pair of ospreys nested beside Bassenthwaite Lake and became the first wild osprey to breed in the Lake District for over 150 years.

The birds were encouraged to stay with the help of a purpose built nest provided by the Forestry Commission and the Lake District National Park. This was the culmination of several years of hard work. Ospreys had been summering in the Lake District since the mid 1990’s and in 2001 they started breeding, immediately adding sticks to the nest.

Once the eggs were laid, wardens kept a round the clock watch to prevent disturbance and deter egg thieves. Ospreys usually lay three eggs, which take about six weeks to hatch. The young stay in the nest for seven or eight weeks. In late summer, the adult female will migrate south, leaving the male to feed the youngsters until they master the art of fishing.

Bassenthwaite Lake is a National Nature Reserve, owned and managed by the Lake District National Park. Most of the surrounding woodland is managed by the Forestry Commission and provides valuable habitats for wildlife.

Threats

Although in the UK the osprey population doubled during the 1990s, and has steadily increased since then, with perhaps 300+ pairs now in the UK, ospreys remain the fourth rarest bird of prey in the UK. Their eggs are still at risk of being stolen by collectors and they are easily disturbed by human presence. If water quality deteriorates, a reduction in fish could have a dramatic effect on the number of young birds raised. Finally, as ospreys migrate, they are vulnerable to habitat changes across southern Europe and Africa, and risk being shot by hunters.


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Eggs! A chilly start to season this year’s clutch.

Picture from a previous year – showing a full clutch of 3 eggs

The Bassenthwaite birds have done it again. On Saturday 10th April the behaviour of the birds changed with both looking a little uncomfortable. The female stood hunched in the nest whilst the male flew around with a fish – but her mind was on higher things!!

Here’s an on-the-spot account by one of the watchers:-

‘There was one bird standing hunched on the edge of the nest looking about. After a time it sat down in the nest with only its head visible. At about 3:30 another osprey flew by carrying a fish. It did not stop at the nest, but flew round a couple of times then went off towards the south. The other bird stood up and looked about, but did  not leave the nest. I stayed for about another ½ hour, and nothing further happened. It then started to snow and got very cold, so I came home.’

By Sunday it seemed that the first egg had been laid although mating continued – a sure sign that more eggs are on the way. Eggs are laid at 2 day intervals and so her clutch will have been completed sometime in the middle of that week. She is now sitting tightly.

Crossed fingers for the next month of sitting.

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