Blue XD

I guess that Blue XD is now set to be part of Loch Garten History. He deserves a page by himself.

Do people have data on his exact arrival time and some videos and pictures.

There has been a blog regarding him here on    28 Mar 2012 5:56 PM

There is still confusion as to his identity but he is said to be the long term partner of Green J   or otherwise known as  S06 

So  Blue/White XD    may be     S18   but there are certain problems with that.

S06 and S18 also parented a chick translocated to Rutland viz.  T04

I wrote about  Green J    here    on 3 March 2012

  

 

  • I find this all quite amazing.  I wonder what brought EJ back to LG from Blue XD's nest last week - would it be that she wants to be on her own nest, maybe XD would not have the new nest ready in time.  Would she have been aware of where he was - I pressume the nests are likely to be some miles apart that she went off in search.  Truly truly fascinating.

    Glad XD is doing okay

  • Unknown said:

    I find this all quite amazing.  I wonder what brought EJ back to LG from Blue XD's nest last week - would it be that she wants to be on her own nest, maybe XD would not have the new nest ready in time.  Would she have been aware of where he was - I pressume the nests are likely to be some miles apart that she went off in search.  Truly truly fascinating.

    Glad XD is doing okay

    Maybe Green J is back!

    and give Blue Boy a severe wigging!

     

  • In an ideal world for the human emotions hopefully Green J has come home safely.  

  • Unknown said:

    In an ideal world for the human emotions hopefully Green J has come home safely.  

    Well she has come home  safely  on at least 19 occasions.

  • I am beginning to think that the average age that is always quoted for Ospreys living to is not always correct - maybe it depends on how far they travel to wintering grounds and associated risks.  I am sure I read average (and Iknow only average) is 8-10 years but then if you look at EJ, Green J and Lady they are all far older - maybe the Highland air. Also BLue XD and Eric (Lady's old mate) on the male side.  I am sure that the more knowledgable bloggers will have many more examples.

  • Unknown said:

    I am beginning to think that the average age that is always quoted for Ospreys living to is not always correct - maybe it depends on how far they travel to wintering grounds and associated risks.  I am sure I read average (and I know only average) is 8-10 years but then if you look at EJ, Green J and Lady they are all far older - maybe the Highland air.

    Yes but how do you calculate average age? Do you include all those birds that die young.

    Not too many juveniles come back.

     

  • Perhaps that is in the calculation Tiger, hadn't thought of that

  • Unknown said:

    Bringing fish???  bringing fish??????/

    Two extreme tiddlers, one a day at evening, and of which he has noshed most   

    Coincidentally I've just been reading the latest blog which asserts that Odin has been bringing (implicitly "plenty of") fish for EJ - but I haven't seen that.  So maybe XD was a better provider than we've given him credit for :-/

  • I agree Scylla and Cirrus, I have not seen many fish either.

    Things are out of sorts here at the moment as Odin is not bringing in many fish.

    I have not seen any today but maybe earlier?

    Here's hoping EJ gets a good meal today

  • Hazel b said:

    I am beginning to think that the average age that is always quoted for Ospreys living to is not always correct - maybe it depends on how far they travel to wintering grounds and associated risks.  I am sure I read average (and I know only average) is 8-10 years but then if you look at EJ, Green J and Lady they are all far older - maybe the Highland air.

    Yes but how do you calculate average age? Do you include all those birds that die young.

    Not too many juveniles come back.

     

    [/quote]

    My understanding was that the average age of the breeding population (i.e. excluding the juveniles that don't come back) is 10 - 14 years. If the trend is for more ospreys to overwinter in Spain (and even further North) then this should have a 'positive feedback' effect.

    Ospreys which overwinter in Africa will tend not to live as long as those that overwinter much further north - due to the energetic stresses and perils of a long migration. Those that overwinter in Spain will therefore, on average, produce more young and therefore more of the next generation will be populated by birds whose parent(s) have a short migration. If this is genetically transferred to the offspring then this positive feedback will result in an increase in mean lifespan of the 'average' adult osprey.

    Some people think Ospreys are a matter of life and death. I don't like that attitude. I can assure them it is much more serious than that.