Intruderfest

The last post mentioned intruder activity on Nest 1 on Saturday morning. Here are the details.

The nest and immediate area was devoid of ospreys when camera streaming began. But only for one minute as a ringed osprey, Blue 69, landed very briefly at 08.59.

08.59 Blue 69 appears (c) Forestry Commission England

08.59 Blue 69 appears
(c) Forestry Commission England

He was back seven minutes later and was followed onto the nest by another Scottish osprey, Blue BV.

Blue BV is on the left, Blue 69 on the edge (c) Forestry Commission England

Blue BV is on the left, Blue 69 on the edge
(c) Forestry Commission England

The pair seemed almost settled together although Blue BV appears male. They were on Nest 1 for six minutes before another osprey landed on the extreme right – Blue 2H, the 2012 Kielder Nest 2 male.

His arrival disrupted the calm and all left. But although Blue BV made no further landings Blue 69 and Blue 2H sparred on and off for more than an hour.

Blue 69 jumps as Blue 2H hovers (c) Forestry Commission England

Blue 69 jumps as Blue 2H hovers
(c) Forestry Commission England

So who are Blue 69 and Blue BV? Both landed briefly on Nest 1 in August last year. Blue BV is from Dumfries and Galloway but we have no further information at the moment. Blue 69 is a 2011 male ringed at Loch Lomond by David Anderson, who kindly passed us the details last year.

The Nest 1 juveniles and Mrs YA appeared about 15 minutes after the last 69 v 2H bout, and she sped off in pursuit of something. The tracking data for VY is very intermittent – this is normal for Nest 1 – but the two fixes during the intrusions showed her some distance from the nest with trees obscuring line of sight. Neither adult could have been nearby because the intruders were never escorted away by another osprey.

Below is a video of some of the interactions between the three intruders.

play

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