[Oryctolagus cuniculus], and cattle [Bos taurus]) were eradicated from Enderby Island in 1993 (Torr 2002). Furthermore, while Procellariiformes are extremely philopatric (Warham 1996), they have been shown to rapidly (re) colonize areas after eradication of introduced mammals (Ismar et al. 2014). There had been no recent dedicated surveys for SGDPs on Enderby Island, and the potential persistence/reestablishment of the species would be of great conservation importance. Outlined in this short note are the results of a survey we undertook to reassess the status of the SGDP at Enderby Island. We searched for Procellariiforme burrows in the dunes of Sandy Bay (-50.500, 166.285), Enderby Island, and subsequently identified their occupants using protocols developed for SGDPs on Codfish Island (Fischer 2016). We conducted surveys each day and night between 12 and 22 December 2016 when diving petrels should be nesting (Payne & Prince 1979; Marchant & Higgins 1990; Fischer et al. 2017, in press). Survey efforts were limited to the dunes of Sandy Bay (200 mx 900 m), because SGDPs in New Zealand are considered dependent on this habitat (Fischer et al. in press). Surveys were completed during daylight hours by two observers working 10 m apart until the entire dunes of Sandy Bay were covered. We marked burrows with temporary markers and reflectors and recorded their GPS locations. Stick palisades were placed in burrow entrances to assess activity patterns (Johnston et al. 2003; Fischer et al. 2017, in press). We checked these palisades daily (n= 9), and to account for false positives, we only considered burrows with three or more records as active (Fischer et al. 2017, in press).

Detected burrows were revisited at night (2300 h to 0200 h; Fischer et al. 2017) and a variety of techniques were used to identify the occupants. We used playback calls of various Procellariiformes that are presumed to breed at Enderby Island (Payne & Prince 1979; Taylor 2000; Heather & Robertson 2015): SGDP (calls sourced from Codfish Island), SubDP, white-headed petrel (Pterodroma lessonii), grey-backed storm petrel (Garrodia nereis), white-faced storm petrel (Pelagodroma marina), black-bellied storm petrel (Fregetta tropica), Antarctic prion (Pachyptila desolata), and fulmar prion (Pachyptila crassirostris). In addition, we used burrow traps specifically designed for diving petrels (length= 30 cm, diameter= 8 cm; Fischer et al. in press). We deployed a maximum of 10 burrow traps per night and trapped for a cumulative total of 86 trap hours spread over seven nights. Once