The PSNI has urged anyone who finds dead wildlife suspected of having been illegally shot or poisoned to leave it where it is and contact police as soon as possible.
They are calling on members of the public to come forward with any information they have.
It comes after the RSPB warned wildlife criminals have the "perfect situation" to carry our their deeds as it is taking so long for suspected poisoning cases to be diagnosed.
Four red kites were found dead in Northern Ireland this year – equivalent to 30% of the breeding population of Northern Ireland's only reintroduced species.
The PSNI's wildlife liaison officer, Emma Meredith, said: "We would urge anyone who has information about any incidents to contact police on 0845 600 8000. Or if anyone would prefer to provide information without giving their details, they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111."