I was out at the back of seven am on the 15/5/10, and I immediately recognised that the bird on the eyrie was the male. The crest on the female is more pronounced and browner, she arrived within five minutes landed near the nest, then after a few preens and calls she made a quick flap to the eyrie, a few calls, hopped nearer and he got off. So yet another change over, my  4th, all in the morning and this time much earlier than I saw the others! When you don't witness this for years and see four within a month makes you wonder, and I wonder if this female is different from last year and that she spends a disproportionate time off the eyrie, or leaves the eyrie every morning. He went to a nearby tree and started preening, after ten minutes I left them and went in search of those elusive Marsh Harriers, bingo, the male was hunting near the nest and I had good views for some minutes till he dropped into the reeds, I was distracted by an unknown warbler in the nearby tree and did not see the male take to the air, I did catch him return to the nest site, without any noticeable prey, spend less than a minute and was off, hunting, but he disappeared down river. I did not catch any wing tags which are very difficult to see on harriers. Why did he go to the nest site? why no food pass?  and the unknown warbler is still unknown, the pair of them only made contact calls so I had no song to help me. I did get a picture of the back end of a whitethroat last week, I am beginning to recognise whitethroats by song and call, a song that is very difficult to describe, scratchy and tuneful. This morning, the 16th of May,  I was again out by the back of seven am and saw the male on the nest and the female preening, my fifth change over about to happen ? well two hours later and situation the same, except the female had flown around and landed on a fence post then back to the nearby taller tree. Surprisingly it was cold for May the 16th  and I had stood for two hours and was ready for breakfast. So I returned pm at 4.30, and the picture was exactly the same! she was on the same branch in the higher tree and he was brooding, facing the same way. I cannot believe this had been the situation all day, anyway she was not preening  just enjoying the breeze, after some minutes he gets off the nest cup takes off, so does she and replaces him without hesitation. My fifth changeover, this is very different behaviour, lets say i have been watching them for five years at say 40 hours per Osprey season that's 200 watching hours, now in the sixth year after five weeks, say 10 watching hours I have witnessed five changeovers, you don't have to be a statistician to know the probabilities have drastically changed. This is putting aside whether you believe I can sexually identify them, a changeover is easily identified. Anyway, he flies around collects a stick, not from the ground but by breaking it off, I see him flying eyrie wards, he banks, dives and next I see him with a much bigger stick, he lands right on the eyrie  with this four foot trailing stick !! he does this with another smaller one and disappears, gone fishing?  and I need to cut the grass. Still not heard or seen a swift

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