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In the past decade, Hong Kong has seen an increase in volume and diversity of endangered wildlife imported through its borders. Recent amendments to legislation concerning wildlife crimes in Hong Kong allow for increased sentencing and prosecution of the crimes. This calls for an increased forensic capacity to aid enforcement efforts. Wildlife forensic science in Hong Kong is generally performed ad hoc via a confidential tender-application process. Additionally, minimal communication between forensic scientists, the prosecution and the judiciary on the use and production of wildlife forensic analyses has compounded the problem of wildlife crimes not being addressed as "serious" crimes. Improving communication and collaboration between relevant stakeholders, including the development of a wildlife forensic reference database, shared forensic practices, and shared information concerning expertise and analyses available within Hong Kong, would provide benefits to wildlife crime investigations. This article addresses some of these concerns in more detail and provides suggestions for improvements to the overall wildlife forensic capacity in Hong Kong. Increasing Hong Kong's capacity for wildlife forensic science will not only facilitate law enforcement efforts but also help to change Hong Kong's status as a regional hub for wildlife trade to one for excellence in wildlife crime deterrence.

Hunted wildlife can often be used to answer questions about wild individuals. Sex ratios of hunted individuals can be important for understanding changes in population demographics and viability. Here we determined the sex ratio of the illegally hunted helmeted hornbill Rhinoplax vigil, a critically endangered species from Southeast Asia, to examine their vulnerability to hunters. Using casques seized in Hong Kong SAR between 2012 and 2016, we identified the sex of seized individuals using morphological and molecular methods as well as discriminant analysis. As R. vigil females can spend up to 6 months of the year sealed into tree cavity nests, they are reliant on males for food. The unique breeding ecology of this elusive species means that males are more likely to be observed than females throughout the year. These behavioural differences mean that there are several potential outcomes which may be observed in the sex ratio of the seized casques, depending on hunting strategies. Our results suggest that sex identification is possible via visual inspection of the gular skin colour and beak‐tip markings, but when these are not available, genetic methods or morphological measurements can be used. Our findings also indicated a primarily male‐biased sex ratio across the seizures; however, females, as well as juveniles, were also present in seizures. Although removing one sex from the wild can cause shifts in demographic dynamics over time, illegal and unsustainable hunting of any measure of a critically endangered species will ultimately heighten its risk of extinction. These methods and results are useful to conservationists and researchers interested in further study of hornbill populations and their viability and are ultimately important for the conservation and management of this critically endangered species.

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