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     The flowerheads of greater knapweed have long rays which are lacking in common knapweed. It's leaves are lobed while those of common are entire.  Small red-tailed bees are the most frequent visitors but several species of butterfly, inlcuding meadow brown, wall, large white and gatekeeper drop in to feed as I draw. The bees outnumber them by about 10 to 1. One of the red-tails is twice the size of the others; this is probably a queen.  This bee (right) which is larger and which has, in proportion, a longer abdomen than the red-tailed workers has an ochre band at the front end of its thorax and a buff or pale ginger tail. Kestrel  A pale brown-streaked kestrel hovers over the crest of the slope. It lands amongst the sparse grass at frequent intervals but what it's hunting I can't tell. It doesn't fly up with  anything in its talons in the half dozen swoops that I watch.  
 
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