Although there have been less ‘intruder alerts’ on Nests 1 and 2 the incubating ospreys still watch the sky intently at times and alarm call. On Thursday afernoon Mrs YA exhibited this behaviour, then hunkered down on the nest. YA landed with a fish – was that all the fuss was about? No, a moment later there were three adults on the nest.
After a few seconds of stand off Mrs YA employed her now familiar and effective tactic of jumping at the intruder who flew off. But she returned to perch just over the edge, apparently keen on YA’s catch!
YA flew off but the intruder stayed until Mrs YA shooed her off again. A few minutes later the intruder overflew the nest again.
The fish wasn’t the only attraction – unattached ospreys will prospect active sites and see how determinedly the residents defend their nest. Mrs YA is usually very resolute.
Slow motion playback revealed the intruder is ringed Blue EU.
She hatched in 2012 near Tain on the Dornoch Firth, about 300 km from Kielder. A video of the incident is here.
Interestingly another osprey from the same area but a different nest landed briefly on the edge of Nest 3 on 2 May. He only stayed a few seconds and we are fortunate that the nestcam was recording at the time. Blue EE is a male who hatched near Tain in 2010.