Sika (cervus nippon) is a mid-sized deer that was introduced to Ireland in the 1860s to the Powerscourt Estate. Soon after that, it started spreading across Ireland. Today, the main concentrations of sika are in Kerry, Wicklow, Tyrone and Fermanagh. More recently, it has also been found in Waterford, Galway, Limerick, and Wexford. The National Biodiversity Data Centre in Ireland lists sika as an invasive species. Despite that, it’s afforded protection under the Wildlife Act. It is prized by hunters as a game species and a source of excellent quality venison on the one hand, and hated by foresters and environmentalists for the damage to forestry and biodiversity on the other.

Sika is present on the entire European continent and, although not as widespread as in Ireland, it is also causing similar problems. This is reflected in the recent move by the European Commission to launch consultations to put sika on the Invasive Alien Species (IAS) list across the Union. This poses the obvious question: what does it mean for the Irish population of sika if the EC makes such a decision? Will or should it be allowed continuous protection with open and closed hunting seasons? Or should it be reduced to the status of vermin and be eradicated across the country?

To discuss the potential future of sika deer in Ireland and present a whole spectrum of views about this species, and invasive species more generally, I spoke with four expert guests presenting different views on the subject. By listening to this episode you will hear from Professor Jaimie T.A. Dick who specialises in Invasion Ecology, Eoghan Daltun an award-winning author who has spent last 15 years regenerating an Irish Atlantic rainforest, Damien Hannigan a Government Appointee to the Irish Deer Management Forum and Public Relations Officer at the Irish Deer Commission, and Professor of Wildlife Restoration Ecology, Adam T. Ford.

Sika Deer in Ireland: Invasive Status and Its Impact - A Three-Episode Exclusive

Access here: https://conservationlens.com/products/sika-deer-ias

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This is the Conservation and Science podcast Replay series, a curated collection of best episodes from last year. If you are new to the show, this is an excellent opportunity to catch up with the most popular episodes from the back catalogue. And if you’re a regular listener, maybe you missed one of those or want to listen to one of them again. Don’t worry! The new episodes are being published on the regular fortnightly schedule, so keep tuning in for the new content every other Tuesday.

Why are elephants dying slow deaths from starvation in African parks? Can contraceptives really solve wildlife overpopulation in fenced reserves? What happens when international animal rights organisations influence conservation decisions from thousands of miles away? These are the uncomfortable questions at the heart of one of conservation's most contentious debates.

Ryan Davy spent 30 years working in African conservation, starting as a 16-year-old volunteer in KwaZulu-Natal's remote game reserves. From those early days confronting poachers and negotiating with local communities, he witnessed firsthand how conservation policies play out on the ground. Now, as a wildlife filmmaker who has worked for National Geographic and Discovery, Ryan brings a unique perspective to the elephant culling debate through his upcoming documentary "The Culling Conundrum." His journey from animal rights supporter to someone advocating for population control reflects the complexity many conservationists face when confronted with ecological realities.

Our conversation explores the practical impossibilities of alternative solutions to overpopulation. Ryan walks through a hypothetical game where listeners manage their own 75,000-hectare reserve, facing the stark choice between letting animals starve or making difficult management decisions. We examine the failed elephant translocation in Malawi, where 12 people died and 80 elephants went missing after an international organisation moved 262 elephants into unsuitable habitat. The discussion also covers the influence of well-funded animal rights campaigns on conservation policy, the disconnect between international activism and local realities, and the economic pressures facing private game reserves. Ryan argues for finding common ground between opposing camps, emphasising that sustainable conservation requires honest dialogue about uncomfortable topics rather than ideology-driven positions.

Further reading:

• The Culling Conundrum | Official Teaser
• Clockwork Orange
• Ryan's YouTube Channel

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Should we worry about consuming venison from an animal harvested with lead ammunition? Will cutting out and discarding meat around the impact area solve the problem? And what are the best practices to keep us safe?

Most of us have heard about the negative effects of lead on health. Not only on our health but also on the health of the ecosystems. In this episode, we are answering questions about the scale and severity of these effects from the perspective of lead used in hunting ammunition. To get a full picture I talk with Prof. Fredrik Widemo, a senior researcher at the Swedish University of Agricultural Sciences in the Department of Wildlife, Fish and Environmental Studies. Fredrik is also a hunter so he approaches this topic from a personal perspective.

Subscribe to Tommy's Outdoors: Conservation and Science Newsletter

Support the Podcast and Buy Me a Coffee.

Recommended Books: tommysoutdoors.com/books

Merch: tommysoutdoors.com/shop

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Mentioned in this episode:

This is the Conservation and Science podcast Replay series, a curated collection of best episodes from last year. If you are new to the show, this is an excellent opportunity to catch up with the most popular episodes from the back catalogue. And if you’re a regular listener, maybe you missed one of those or want to listen to one of them again. Don’t worry! The new episodes are being published on the regular fortnightly schedule, so keep tuning in for the new content every other Tuesday.