Found this clip,on u tube,which might or might not interest some folk,i found it breath taking. Looks like the adult makes the kill ,then lets a yong one take it
https://www.google.co.uk/url?sa=t&rct=j&q=hobby%20catching%20swift&source=web&cd=1&ved=0CCEQyCkwAA&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DeHOV40b9_xA&ei=Fr3bVPfJNsHq7AaXtoDgAw&usg=AFQjCNHYN5oUjluepVsUPwfHvrRw6Hn66Q&bvm=bv.85761416,d.ZGU
I watched so much of it then stopped, It's obvious what the conclusion was going to be, I love birds and I love nature but I take no pleasure in the killing, just a softie I guess.