While birding in England I got to see Red Kites (near threatened status). I first noticed these amazing birds along the motorway going out of London. Later I had a great opportunity to see around 17 flying low over one field in Buckinghamshire. This was all near Waddesdon Manor, a property now owned by the National Trust. This place includes an aviary with a breeding program for threatened bird species.
This one spotted us and came in for a closer look.