“I am a U.S. Fish and Wildlife Service biologist at the Kauai National Wildlife Refuge Complex which includes a seabird refuge, Kilauea Point National Wildlife Refuge on Kauai, Hawaii. I have used active infrared TM 1550 BAT and TM35-1 cameras at two Newell's shearwater burrows on the refuge for three years now. Prior to this, we knew very little about the nesting behavior of this species. They are difficult to study because they are nocturnal and primarily nest high in the interior island mountains in thick vegetation on steep, often inaccessible slopes. We are fortunate to have a few nesting at this refuge likely because of a cross-fostering project conducted 30 years ago. We believe the nesters today are progeny from those birds. Using the TrailMaster equipment, we have documented courting, mating, incubation intervals between the pair, length of incubation, and chick provisioning frequency. Additionally, we have documented potential predators at the burrows too. I have been immensely satisfied with the quality and durability of the equipment and the helpfulness and responsiveness of the TrailMaster staff. You guys are doing a great job.
I've attached three photos taken with the TM1550 and the TM35-1 camera kit, two show potential predators at the burrow entrance and the last one is an adult and chick just outside of the burrow."