As you will have gathered Titchmarsh LNR in East Northamptonshire is my local patch and one that I visit on a regular basis.
Last Monday I was walking down to the reserve when I heard a call that I did not recognise, very strange, a sort of mid-range single note call ( hope that makes sense ) that I had never heard
before.
I got to the entrance gate turned left and flushed three birds from the
trees on the left hand side of the track, they were clearly just fledged raptors
and I suspected Sparrow hawks, they flew over the path into the trees on the
right hand side, not good flyers yet or perchers with plenty of wing flapping to balance and settle down but sadly too quick and distant for any
shots.
They were contact calling each other on a regular basis.
I also saw a parent bird circling high overhead.
So, I visited Xeno-Canto and located the call I was hearing.
http://www.xeno-canto.org/species/Accipiter-nisus ( block in, right click and look for reference XC95574 ).
Indeed just fledged Sparrow Hawks !. Birding is as much about your ears as your eyes if not more so.
Today I observed from a distance and just manage to get a record shot of, I am sure, one of the juveniles. Not great and at distance but you have to start somewhere.
I understand the adults will continue to feed the juveniles for another 20-25 days as they hone their flying and hunting skills, toward the end of this period food made available to the fledglings is gradually reduced encouraging independence.
A great process to witness and become involved in, from a distance..