Manic Spiders

I had planned to put in a photo of a bee as there are loads of them manically buzzing around a bush in the garden. However, I then noticed a couple of leaves on a different bush with lots of tiny black dots.

On closer inspection these 'dots' turned out to be baby spiders hatching out - each one has a body about a millimetre long so they're very small. as they were also wriggling about a lot it was hard to get a decent focus. I think they are yellow as a 'don't eat me' warning and will change as they grow up (if they don't get eater first!).