veggie garden

I would imagine that the bird poo is a good thing. Unless you get some good answers on here, I have always found the staff at Palmers Garden Centres really knowledgable.

But I would be more inclinded to buy some new soil & turn both lots together.

Is it a raised bed?

Also if you are going to plant things like brocolli & cauli make sure you plant marigolds as well as it helps keep away the bugs. It's called companion planting or something like that.

Good for you! We love having a vege garden. Veges are sooo expensive in the shops and covered in sprays etc. What I would do is turn the soil over, don't worry about the bird poo that is fertiliser, and pop in a couple of bags of good compost and some blood and bone. You always feed your soil rather than feed your plants. Invest in a yates garden guide too it will tell you what to plant together and what to keep apart (like tomatoes and potatoes). Also invest in some slug and snail repellant and some derris dust for the white butterfly, or netting if you don't want to dust your veges. If you plant marigolds to keep away bugs it has to be the french marigold. If you don't have much space then just plant the expensive stuff. It is probably a bit late for tomatoes but you could put in broccoli, silverbeet etc. I alway plant my lettuce & herbs in pots just outside the kitchen mostly because I'm too lazy to always walk down to the garden and it also saves space in the vege patch.
Good luck and have fun with your garden!