Calum has been working on the faunal component of urban restoration. Working with John Innes and Joseph Waas, Calum has worked on organising and undertaking a translocation of NZ bellbirds into Hamilton City; one of the first cases of active restoration of endemic avifauna into an urban environment. The progressive translocation incorporated various experimental research elements, and was undertaken in collaboration with groups also doing bellbird translocations of NZ bellbirds in the Auckland region. Calum has also been working with Joseph Waas, Laura Molles, and 2 PhD students on a Marsden funded project researching song dialects in kokako. This kokako work has involved assisting students planning and executing extensive field trips to various locations to collect song recordings, and some assistance in analysis of the recordings.