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The
translocation diary, 2005 Monday 1
August: a foster mother? The four young Ospreys released on
Friday were carefully monitored over the weekend, both
visually and by means of tail-mounted radios. 7A, 7B and 7C
were spending most time on the artificial nest, AN1, while
7D preferred a perch on the other side of the wood on Lax
Hill. There had been quite a lot of aggression shown towards
them by 08(97), the non-breeding male and also, initially by
U4, an unringed female that has been associating with 08 in
recent weeks. On Saturday evening, and then again
three times yesterday, there was an amazing turn of events -
- - the unringed female brought fish and dropped it into the
artificial nest! Presumably the food-begging calls of the
juveniles had sparked her maternal instincts. This must be good news for the project
- the youngsters are not needing to return to take the fish
that we are putting out regularly on top of the pens and are
receiving fish of different types and in the more natural
surroundings of a nest. But also, it must increase the
chances that this adult female will associate Rutland with
breeding and return, perhaps to AN1, next year. Roy Dennis is delighted at this turn
of events. He has seen similar "fostering" on rare occasions
in Scotland, but it is pretty clear that translocated birds
have never received this benefit before. The less good news was that 7D seems
to have disappeared. She probably fed from the pens
overnight but, throughout the day, there has been no sign of
her. There was only a very weak short burst from her radio
at mid-day suggesting that she may have been well to the
west. Subsequent use the yagi (radio receiver) from many
local hill tops and ridges revealed no further
transmissions. Wednesday
3 August By mid afternoon 7J had returned to
Lax Hill, U4 had delivered yet another fish and Tim
Mackrill had gone on another expedition with the yagi to
try to locate 7D's radio. Tuesday 2
August: more Ospreys released Then this morning, with TV cameras
and other members of the press in attendance, the pen
front was opened. It was a VERY long wait but eventually
in mid afternoon 7J flew off and away to the north. One
of those that were released earlier joined her for a
while as she explored over the Hambleton peninsula and
then over the town of Oakham. She became lost to sight
but her radio confirmed her direction and position, as
she eventually landed in a distant wood where she stayed
till evening. The flights of 7N and 7E were
delayed still further, but eventually they took to the
air, landing quite awkwardly but safely in the trees on
Lax Hill. There, 7E was treated to a fierce session of
dive-bombing from 08, presumably trying to drive her off.
But 7E, very sensibly, remained on her perch, ducking as
08's outstretched talons whistled past again and
again. Still no sign of 7D today.
At least 3 more fish were delivered
by U4. Saturday
6 August Unfortunately there is still no
sight nor radio sound from 7D - hopes are fading for this
female's survival now. The unringed adult female continues
to drop fish into the artificial nest, much to the
juveiles' delight, and the adult male 08(97) continues to
assert his superiority from time to time. This afternoon
he spent many minutes just gliding effortlessly above the
juveniles. Finally he dropped down onto the freshly
cut-up fish that we had put out, grabbed the head of a
trout (to Ospreys the head is definitely the best part)
and flew off with it for an easy meal. Photo
opportunities Thursday
11 August Only a single, much younger, female
chick remains in the pens now. Monday 15
August The late afternoon views from the
view point in the marquee are often quite
breathtaking. However, it could be that the most
powerful flier, 7A, has now left on migration since her
radio has not been detected since Saturday. Several of
the juveniles have been seen to take dives into the
water, but there have been no records of successful
catches so far. Wednesday
31 August However, yesterday their number was
swelled as we were finally able to release the last
chick. This one, given the ring number 33, was very much
younger than all the others having been taken from a nest
in Scotland where a pair of first-time breeding adults
had laid eggs very late indeed in the season. This chick
arrived in Rutland on 23 July (click
for details) and
initially needed hand feeding. Gradually it has grown and
developed although it has always been way behind the
other translocated juveniles and for 19 days has been
alone in the pens It has been difficult to decide
what its gender is, but when the vet came to check its
readiness for release last week we changed our minds yet
again and decided that she is in fact a he! In due course
DNA analysis will confirm its gender. On release yesterday, 33 took a
confident first flight lasting 23 minutes before landing
non-too-expertly on AN1. Several more short flights have
been recorded today. And, as this page is published, news
comes in that he is feeding on fish taken to the
artificial nest by one of the more experienced
juveniles. The 2005 translocation diary
continues here.
John Wright was up at 5:30
with the yagi, checking on the positions of the three
birds released yesterday. 7J was still in the wood to the
north and 7N and 7E still safely on Lax Hill. They later
transferred to the artificial nest from where it is
easier to withstand 08's attentions.

View from
"the Outpost"Careful observation of the
behaviour of those Ospreys still in the pens has
suggested that 7E, 7J and 7N are now ready for release.
Yesterday afternoon they were taken from the pens and the
development of their tail feathers confirmed that they
were ready to go, so radios were mounted on their
tails.

7A and 7N on
AN1 in the afternoon sun on 6 August
Little change to report
except that 7A, 7B, 7C, 7E, 7J and 7N are gradually
improving their flying skills around Lax Hill. From the
public viewpoint excellent views can be had, particularly
in the late afternoon when the light picks up the young
Ospreys to perfection. In order to get to the viewpoint
you need to come to the Birdwatching Centre at Egleton,
get a permit and follow the footpath for about half a
mile past several birdwatching hides to the south. Once
there you will be able to borrow a telescope, rest your
feet and just enjoy the spectacle.
The close views of Ospreys
are providing some good opportunities for pictures, as
these two images from visitors to the reserve
show.

Neil
Greenberry took this picture on 7 August. It shows U4 the
unringed female and 08(97) in the air above Lax Hill.
Shortly afterwards U4 delivered these fish remains to AN1
for the benefit of the juveniles.
Lyndon8-8-05.jpg)
Three more Ospreys were
released today. The one male 7S and females 7P and 7R
were offered their freedom at about 10 am and all three
seized the moment, leaving the pen even as the front was
lowered. They all took strong short flights and landed
expertly on AN1, the nearby artificial nest. Further
short flights continued throughout the day.
Still nothing from 7D, but
the other released young are getting much more
adventurous with their flights, often being seen in the
south arm of the reservoir, particularly from the Lyndon
Visitor Centre and from Heron Hide. They regularly return
to the release pen area to take the large pieces of trout
that we are putting out for them twice each day.

Volunteer
John Spencer using the "Yagi" to track
the juvenile Ospreys
During the week, the released
juveniles (apart from 7D) have been regularly coming back
to take fish from the feeding trays. But they have been
less frequently in the vicinity of the pens, preferring
instead to spend time on the quieter southern side of Lax
Hill. Seven of them could be seen from the Lyndon Visitor
Centre on Saturday afternoon.

Two
juveniles on the feeding trays, as viewed from the
Outpost
7A was away for just 3 days
before returning to the easy supply of fish on Lax Hill,
so for most of the week we have been recording 9 young
Ospreys coming in to feed.
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Where to see the Rutland Ospreys There is a special viewpoint in a marquee at the foot of Lax Hill where staff and volunteers are on hand to help visitors see the Ospreys and explain what is going on. Typically the perched and feeding Ospreys are about 300 yards from the viewpoint. A particularly good time to see them is the late afternoon or early evening. The viewpoint is open from 1pm to 5pm each day (weather and Ospreys permitting!) ![]() The public viewpoint at the foot of Lax Hill Recently we were pleased to welcome Dr Andrea Sforzi, Giuseppe Anselmi and Marco Madeddu) as visitors to the Rutland Osprey Project. They come from the Parco Regionale Della Maremma, an important wetland and maritime area on the west coast of Tuscany where a project is under way to encourage the Osprey to breed. There is a growing population of Ospreys on nearby Corsica and there are plans to translocate young birds from there to the Park of Maremma. Our visitors were interested to see the methods being used by us for holding, caring for and releasing Ospreys translocated from Scotland. An interesting email from Paul Neale:I am working on a construction vessel in the Dutch Sector of the Southern North Sea about 100 miles offshore. We are stationary alongside a oil platform. |
As the Birdfair moved from Friday to Saturday to Sunday, the weather gradually improved and so did the Osprey sightings. Most of the estimated 18,000 visitors will have had a good chance of seeing the birds. A special thankyou to the team of 35 project volunteers who in the Visitor Centre or the marquee gave up time to help people see the Ospreys and to talk about the project. Unseen by the visitors but often heard on the radio were the skilled stalwarts who worked in the close monitoring post, ("The Outpost"), identifying the juveniles by telescope and yagi as the birds came into view. Friday was a disappointing wet day and the planned cruise was cancelled. However, the translocated youngsters have to eat and there were some good sightings from the viewpoint particularly in the evening, as they came to take fish from the feeding trays. |