13 to 18 of the birds were shot, and Gill was found guilty of three offences of allowing a protected animal under the Wildlife and Countryside Act 1981 to escape into the wild. The birds are harmful to British fauna, and have been viewed as an invasive species within Britain.
This conviction formed part of the reason as to why Gill's licence was not renewed in 2017, according to the head of Barrow Borough Council's licensing subcommittee. In the same year local media covered sightings of two capuchin monkeys that also escaped from the zoo.