Parrot/parakeet health question?

My landlord (who lives in the house) has brought a small parakeet type bird into the house. It’s in a dreadful state - all its feathers are manky, and I’ve seen it pluck its own feathers out. It’s kept in a cage all day, and from what I can see, it can’t fly. It uses its beak and claws to navigate around the cage.

All it’s fed are monkey nuts, bits of fruit and water. The landlord says it plucks its own feathers out because it’s bored. I just think it’s really cruel. It hardly has any contact all day. The owner doesn’t get back till about 8pm and then hardly does anything with it. I think he’s hoping it’ll speak, then “I can sell it for £1000″, but there’s no way this thing will speak unless it receives some TLC. The landlord’s not a bad bloke and he doesn’t mean it any harm, but I just think no one wants it - its exchanged hands between his family several times already.

I can’t really ring the RSPB/RSPC though, as he’ll know it’s me and I’ll most likely get kicked out.
- Quickswitch79