It all depends on how big the predator is, how big the prey is, how much they consumed and was metabolized before predation. It doesn't magically kill anything that eats it or there'd be dead cats in every street of every city. The older generation of rodenticides were quite lethal to secondary ingestion though, that's for damn sure. Additionally, technically speaking, according to the manufacturer, the rodents are supposed to lose consciousness from the anti coagulant well before death, it isn't a pain inducer.

Also, the article is biased in the same way a company using a rodenticide is in the opposite direction. Sensationalism exists.

Not sure what kinda rat poison they are using, but most would have to eat a lot of poisoned rodents in a short span to get secondary sickness nowadays. I use it for a living lol. Anyway, here come some new federal regulations!

It shouldn't have been in a place accessible by a non target animal like a bird in the first place, per the law and the label. Someone is gonna be in big fuckin trouble if they figure out who is tossing rat bait into the open like that.

They released it back to the wild.

Thats normally how applications of aerosols is calculated.

Sigh unzips pants