I was going to call this topic 'Birds' but may as well include other creatures. Anyway I saw a sparrowhawk in a garden backing onto Blythe Hill Fields last week. Maybe not strictly SE23 but it is probably no respecter of postcode boundaries. Some other less common birds spotted in and near our garden in HOP include bullfinch, greenfinch, goldfinch, jay, green woodpecker (often heard 'yaffling'), great spotted woodpecker, blackcap (last few weeks -- sounds like nightingale on 'uppers'), wren, blue, great, long-tailed & coal tits, whitethroat, heron, waxwing (one cold winter), dunnock. Further afield: raven (high over Greenwich Park -- a pair tumbling unmistakeably, maybe on passage somewhere), red-backed shrike (Greenwich Peninsula a few years back, thanks to a bunch of 'twitchers'). I wonder what indigenous species the parakeets displace? I can't recall seeing a sparrow lately.