Dear MARMAM community, On behalf of my coauthors, I am pleased to share our recent publication in the Journal of Mammalogy: Barlow, D.R., Klinck, H., Ponirakis, D., Holt Colberg, M., Torres, L.G. (2022). Temporal occurrence of three blue whale populations in New Zealand waters from passive acoustic monitoring, Journal of Mammalogy. https://doi.org/10.1093/jmammal/gyac106 Abstract: Describing spatial and temporal occurrence patterns of wild animal populations is important for understanding their evolutionary trajectories, population connectivity, and ecological niche specialization, with relevance for effective management. Throughout the world, blue whales produce stereotyped songs that enable identification of separate acoustic populations. We harnessed continuous acoustic recordings from five hydrophones deployed in the South Taranaki Bight (STB) region of Aotearoa New Zealand from January 2016 to February 2018. We examined hourly presence of songs from three different blue whale populations to investigate their contrasting ecological use of New Zealand waters. The New Zealand song was detected year-round with a seasonal cycle in intensity (peak February-July), demonstrating the importance of the region to the New Zealand population as both a foraging ground and potential breeding area. The Antarctic song was present in two distinct peaks each year (June-July; September-October) and predominantly at the offshore recording locations, suggesting northbound and southbound migration between feeding and wintering grounds. The Australian song was only detected during a 10-day period in January 2017, implying a rare vagrant occurrence. We therefore infer that the STB region is the primary niche of the New Zealand population, a migratory corridor for the Antarctic population, and outside the typical range of the Australian population. The full article is available online: https://academic.oup.com/jmammal/advance-article/doi/10.1093/jmammal/gyac106... Please do not hesitate to contact me with any questions or to request a PDF copy. Cheers, Dawn Dawn Barlow, PhD (she/her) Postdoctoral Scholar Marine Mammal Institute | Department of Fisheries, Wildlife, and Conservation Sciences Oregon State University | Hatfield Marine Science Center Geospatial Ecology of Marine Megafauna Lab<https://mmi.oregonstate.edu/gemm-lab> dawn.barlow@oregonstate.edu