The global population and status of Snowy Owls Bubo scandiacus are particularly challenging to assess because individuals are irruptive and nomadic, and the breeding range is restricted to the remote circumpolar Arctic tundra. The International Union for Conservation of Nature (IUCN) uplisted the Snowy Owl to “Vulnerable” in 2017 because the suggested population estimates appeared considerably lower than historical estimates, and it recommended actions to clarify the population size, structure, and trends. Here we present a broad review and status assessment, an effort led by the International Snowy Owl Working Group (ISOWG) and researchers from around the world, to estimate population trends and the current global status of the Snowy Owl. We use long-term breeding data, genetic studies, satellite-GPS tracking, and survival estimates to assess current population trends at several monitoring sites in the Arctic and we review the ecology and threats throughout the Snowy Owl range. An assessment of the available data suggests that current estimates of a worldwide population of 14,000–28,000 breeding adults are plausible. Our assessment of population trends at five long-term monitoring sites suggests that breeding populations of Snowy Owls in the Arctic have decreased by more than 30% over the past three generations and the species should continue to be categorised as Vulnerable under the IUCN Red List Criterion A2. We offer research recommendations to improve our understanding of Snowy Owl biology and future population assessments in a changing world.

In sub-Saharan Africa, and particularly within Ghana’s savanna ecosystem, scientific studies on the distribution patterns and habitat use of raptors, including vultures, are scarce. Despite global research on vulture abundance and habitat preferences, data from West Africa remain limited. This study examines the abundance of four vulture species, focusing on their seasonal activity, age distribution, and preference for three specific habitats, i.e. woodlands, riparian forests, and grasslands, in the southern part of Mole National Park (MNP), Ghana. We conducted a survey using 39 line transects during both dry and wet seasons to make an inventory of these species. Employing a generalised linear model, we assessed the influence of seasons, age, and habitat types on vulture abundance. Our survey recorded a total of 466 vultures, with Hooded Vulture Necrosyrtes monachus and White-backed Vulture Gyps africanus being the most frequently observed. Vulture numbers were notably higher in riparian and woodland areas than in grasslands, and adults were more prevalent than juveniles across all observed species. The study highlights the need for continuous monitoring and the protection of critical riparian habitats to aid in the conservation of these threatened species within the MNP.

Amazon parrots stand out as one of the most illegally traded Psittacids in the neotropics. However, the lack of effective tools for determining the geographical origin of confiscated individuals has impeded the development of well-informed release programmes. In this study, we evaluated the efficacy of the cytochrome oxidase subunit I (COI) gene to identify phylogeographical groups and infer the origins of seized individuals across six Amazon parrot species. Through comprehensive genetic and phylogenetic analyses of 140 COI sequences from individuals with documented geographical origin, a genetic reference database was assembled. The most likely origin of 156 seized parrots was inferred by comparing their genotype to this database. Within the Yellow-headed Parrot Amazona ochrocephala species complex, our analyses revealed the presence of seven distinct phylogeographical groups, exposing a notable poaching impact in the Middle Magdalena’s river valley. For the Southern Mealy Amazon A. farinosa, three distinct genetic groups were identified, with seized individuals showing comparable proportions originating from both the Cis- and Trans-Andean regions. Noteworthy genetic differentiation was observed between individuals of Festive Amazon A. festiva from the Caquetá–Amazon Rivers and those from the Meta River, with two seized individuals assigned to the former. The Scaly-naped Amazon A. mercenaria exhibited genetic divergence between individuals from the central Andes and the Sierra Nevada de Santa Marta. In contrast, the Orange-winged Amazon A. amazonica and Red-lored Amazon A. autumnalis did not display significant phylogeographical structure. However, analyses of seized individuals of A. amazonica suggested a potential underestimation of its genetic diversity and structure. This study illustrates the utility of mitochondrial molecular markers in determining the most probable area of origin for confiscated Amazon parrots, aiding in release programmes and enhancing the monitoring of natural populations.