One of the first white-tailed eagles to fledge in England for hundreds of years has vanished in suspicious circumstances, alongside two more “devastating” disappearances of the reintroduced raptor.

Police are appealing for public help as they investigate the disappearances, which are a setback to the bird’s successful reintroduction. Their disappearance is being investigated by several police forces and the National Wildlife Crime Unit.

The RSPB is offering a £10,000 reward for information leading to a conviction. Dr James Robinson, RSPB chief operating officer, said: “The RSPB is shocked with this news, so much so that we are offering an overall reward of £10,000 for information that leads to a conviction in these cases. Eagle tag-data is so precise that the point of death and any subsequent movement of the tag will be known to investigators, so we urge the public to come forward with information. Raptor persecution has no place in modern society, let alone threatening such an important UK government-backed reintroduction scheme like this.”