Diary of the osprey breeding season in the Tweed Valley, Scottish Borders.
Monday, 13 April 2009
A Dramatic Weekend
However, on Saturday another Osprey spoiled their peace by invading the nest. When the male brought a fish in about 3pm, the female was joined by another bird, and briefly there was a dramatic struggle with three birds on the nest. It appeared as if our female had the intruder pinned down for a minute or so, before it escaped the violent squabble , minus the fish, and the male exited stage left! It is highly unusual for ospreys to come to physical blows like this, with most aggression and defence being ritualised posturing and 'swearing' rather than coming to blows with talons!
That would usually be the end of that, but for at least and hour and a half, the intruder continues to harass the female on the nest, dive bombing and swooping so low our lass had to duck to avoid being struck . The speed at which these attacks occurred was incredible, as was the intruders persistence. Those watching we riveted by the drama, but alas it was all so fast and furious we could not get a view of an identity ring on the intruder, so its identity remains a mystery. Was it another female? Was it a previous years offspring convinced it had rights to its natal nest?
In the five years we've been watching this Osprey couple we've never seen such a prolonged episode of aggression. We can only hope the drama has not put our female off laying her eggs as they are literally due any time now.
1 comment:
Please feel free to leave your comments on the blog. We've got a few house rules:
1. We (Forestry Commission Scotland) will review all comments and reserve the right to not publish them at our discretion.
2. There will be a time delay between submission and posting. Comments posted on a Saturday or Sunday won't be moderated until the following Monday.
3. Please make comments appropriate and relevant.
4. If you've a comment or question about Tweed Valley Ospreys , you can e-mail tweedvalleyospreys@gmail.com as we might not be able to respond here.
5. We won't publish comments that are abusive, indecent, unlawful or defamatory; published comments may be removed at any time; and individuals are personally liable for the comments they submit.
Thanks!
Hi, I'm looking out for Errol!!! and the other 2005 Tweed Valley Ospreys. Could you please tell me Errol's ring ID and the other 3 chicks from the 2005 backup nest also the main nest if you have them. I think your updates are super. Thanks
ReplyDelete