Pumpkins are fair game for all manner of fungus, critter, pest and disease. However, they are a fairly prolific fruit and you will probably find that you will keep about 70% or more of the crop.
If you have a rat, when it has a forage, leave the damaged fruit for it to come back to. If you remove it, the rat will just select another.
D is right when she says the fungal probs may have caused a few fruit to develop holes and soft spots. However, depending on what type of pumpkin they are, you may get some ripening early because of the fungus. So cut the crap bit out and you may find the rest is good. They’re the ones to use up first.
Sunburn hit my Qld blues a few months ago and some of those affected now have scabbed areas which can be prone to rot. I figure they will be the ones which will be consumed first. There are still some embryo fruit on the vine. There are some which are still developing and others which developed in Summer. I’d say where you live Pom, you could expect another month or so of fruit development. So you’ll get a good feed.
An old tile or similar under a pumpkin will help prevent fungal disease developing on the bottom side.
As an aside, i planted 3 Qld blue seeds. Retained one.
I’ve picked 59 pumpkins so far and there are still about 50 developing. plus others at embryo stage.
However, the really early ones i have cut have been shyte. No colour, so the worms or chooks got ‘em. I figure a few months and maybe a frost will mature the bulk of the crop! No rats so far this year. They can’t be far away though!