Defender Radio and The Switch

Wildlife corridors are a great idea: they connect habitats and ecosystems, allowing animals of all types to safely get across roads. As over 20,000 animals are killed, 570 motorists injured and $700,000 spent for clean up of animal-vehicle collisions in BC according to, corridors are also a wise investment.

They come in many shapes and sizes, but generally are under or above ground passages that allow for safe passage where humans travelling at high-speeds represent a risk.

Questions about the efficacy of these corridors are being answered with ongoing research; but one that jumped out at me was the question of how a wildlife corridor impacts predator-prey relationships. There’s a logic to the concern: if a predator figures out that their prey are routinely using a narrow, easy-to-ambush tunnel, they may be able to outwit and negatively impact prey populations.

Of course, the best way to find an answer is to ask a question: and that’s what April Martinig did.

Martinig, a PhD candidate at University of Alberta, was the lead author on a study published in the journal Scientific Reports, titled ‘Temporal clustering of prey in wildlife passages provides no evidence of a prey-trap.’ This study adds to the growing list of benefits of wildlife corridors around the world. To explain why wildlife corridors are great, the lengthy process of reviewing tens of thousands of images from trail cameras, and what insights about predators, prey and their relationships she learned, April Martinig joined Defender Radio.

Want to show the world your love for wildlife? Check out, a family-owned business that hand makes animal-inspired jewellery! Available in multiple, ethically-sourced metals, the charms, necklaces, bracelets and cufflinks showcase the personality of each animal. The best part is that through their Wildlife Communities and Ambassador programs, contributions are made to organizations making a real difference in the lives of animals. I really can’t say enough the people behind this company and their mission. To find out more and pick out a gift for a loved one (or yourself, because #selfcare) visit – and use promocode DEFENDER RADIO to get 10% off your order! That’s and promocode Defender Radio.

The Study:

Jefferson Salamanders close Burlington Road:

Defender Radio on Facebook ( Instagram ( and Twitter (

Defender Radio Patreon:


Share your FAVOURITE episode of Defender Radio anywhere on social media; send us a screen grab of the share along with your contact info; one listener will be selected to win a gaiter face mask from The Fur-Bearers! Email your screen grab and info to or to any of our social networking channels!

Direct download: Defender_Radio_Pocdast_719_Safe_Passage_April_Martinig.mp3
Category:Season 07 -- posted at: 12:55pm EDT