This is currently my favourite topic

. We had lots and lots of Damselflies earlier this year in our pond, then a few weeks ago the Dragons started to appear: Emperors, male and female Southern Darters (the orangey ones you saw are probably male S Darters) and some large speckledy ones I've forgotten the names of (one of which laid a large number of eggs). The Emperors are green and enormous

like a flying boot scraper
Our pond was originally a koi pond but our large Koi were frozen before Christmas which meant there were no fish to predate larvae over winter. We have put in new Koi and Goldfish this year but I think Damsel and Dragon numbers will be high enough now to keep larva numbers up.
One year we saw a Dragongfly nymph carrying a small froglet, amazing sight.
There is a second pond where the Damsel and Dragonflies have been laying eggs too, which has minnows in, so larvae and nymphs should be safe there
What a splendid sight you enjoyed [member=152775]arobwk[/member] in the centre of a city too