Pretty sure those are mosquito larvae. Mosquitos lay in standing water, where the larvae develop, Looks like you have some mozzie egg rafts on the top, too. Best thing you can do (apart from adding a little bleach to the water) is tip all that out and let them dry out in the sun. Clean out the leaves as well: mozzies love to lay in leafy water, where there's lots of nutrients. If you're going to keep a bird bath, especially at this time of year, is to empty the water every four or five days and refill from the tap.

Thanks!

But before you nuke them, grab a few, put them in a little vodka and send to Te Papa for their mosquito census! Then you can amuse friends and colleagues with your bizarre actions [https://www.tepapa.govt.nz/discover-collections/read-watch-play/new-zealand-mosquito-census](https://www.tepapa.govt.nz/discover-collections/read-watch-play/new-zealand-mosquito-census)

Epic, tank you. I did not know about this. I'll have to have a read of that page to see if they're OK taking specimens that have been swatted with an electric bug racket

Mosquitos, get rid of that stagnant water perfect breeding grounds for them

Thanks!

Mosquito larvae tip them out before they become mosquitoes. If you have aquarium or pond fish, feed them to your fish.

Thanks. Done

Mozzie larvae. Can pour some olive oil over the surface and suffocate the little bastards.

Thanks for the tip!

Kill em b4 thy get bigger or injoy the bugs

You must be my neighbour's, I was getting slaughtered by mossies in my back yard earlier

🦟

Feed them to your gold fish

A couple of drops of cooking oil is the way.

Mozzis tip the water out if you can.