Neighbour putting out cured meats and salted foods for birds

Hi Slight smile

I live in a flat with a shared garden. My neighbour in the block has recently been putting out food for the birds. Whilst I wouldn’t usually mind, they are putting out human food including smoked salami, salad with dressing, chicken pasta pots etc. It is mostly pigeons, sea gulls, crows and magpies that eat the food but occasionally there is a robin and thrush that come for it. I’m worried about this food harming the birds especially with chick season coming up. I’ve asked them to watch what they are putting out but they’ve carried on with this stuff. I’m wondering if this food can really harm the smaller birds as I know salty foods isn’t good for them. Please any advise or knowledge would be appreciated.

Thanks,