Night Life owls | Gardening for wildlife | Gardening Australia

Night Life owls | Gardening for wildlife | Gardening Australia

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Rats and mice – the mere mention of them is enough to send gardeners into a tailspin. These night-time visitors to our gardens can make quick work of coddled crops and frustrate even the most fastidious of gardeners – eating fruit as it ripens, raiding chook runs, nesting in compost heaps and generally making a nuisance of themselves. While our first instinct to deal with these rodents may be to bung out some baits and wait, there are some native nocturnal nice guys that will, if given the chance, can take care of rats and mice for us.

Hidden in the tree hollows and bush remnants around our cities, towns and gardens are a variety of nocturnal birds, and Josh is meeting with some Margaret River residents passionate about protecting these predators from their preferred prey – poisoned mice and rats.

Dr Boyd Wykes, a retired ornithologist, zoologist and conservationist explains that Margaret River is a hotspot for nocturnal birds. “We have abundant small, familiar Boobook and extraordinary Tawny Frogmouth plus the lesser known, diminutive Owlet Nightjar. You may even encounter a ghostly Eastern Barn Owl in farmland.” But recently, Boyd was able to add another owl to this list – the enigmatic Masked Owl (Tyto novahollendiae), the largest night predator in the region.

After the discovery of the Masked Owl population, Boyd (along with Steve and other passionate locals) founded the Owl Friendly Margaret River group, with the Masked Owl as their logo. The volunteer groups mission is simple, according to Boyd – “we want to tackle an insidious problem – the poisoning of nocturnal birdlife and other fauna by rodenticides, specifically second-generation anti-coagulant rodenticides – and make the Margaret River region a safe haven for all our fantastic fauna, especially our owls”.

Rodenticides, (or ‘rat baits’ as they are known) are a fairly common way for gardeners, farmers, homeowners and businesses to manage problem populations of rats and mice, but, as Boyd explains, not all baits are created equally. “We separate rodenticides into two groups, First Generation and Second Generation, dependant on their active ingredients”. First Generation baits with active ingredients Warfarin and Coumatetralyl “work more slowly and break down more quickly, and our wildlife has a higher capacity to cope with ingesting these products”. On the other hand, Second Generation baits with active ingredients including Brodifacoum, Bromadiolone and Difenacoum are more potent, with a lethal dose delivered in a single feeding. But when ingested, rodents still take days to die and when eaten by wildlife may contain many doses – “it’s those second-generation baits that cause the real problems for non-target animals” says Boyd.

“Non-target native animals like bush rats, quenda and possums will eat rat baits, and ingesting this has the obvious impact of poisoning them” says Boyd. “But, with many of our native animals, including owls, it is the ‘secondary poisoning’ from these second-generation products that causes the issues. If an owl eats a poisoned rodent, the results can be deadly – if they aren’t killed by internal haemorrhaging, we find that they are more likely to hunt unsuccessfully, be killed on the roads or become incredibly ill”.

Phil Pain is the curator of the Eagles Heritage Raptor Wildlife Centre in Margaret River, a site that homes permanently disabled birds of prey and owls which are unable to be returned to the wild. Away from the public view, seven acres have been set aside for wildlife rehabilitation, including a hospital and specialised facilities designed to help orphaned, injured and sick raptors and owls return to the wild. “We receive owls and raptors with secondary poisoning all the time, handed in by volunteers and members of the public” says Phil. “Mice and rats are their preferred dinner, but eating one that has ingested a second-generation rodenticide often proves fatal”.

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12 Comments

  1. David Peppers on October 10, 2021 at 8:34 am

    whoootyie whooo.
    God Loves You and so do I.
    Peace!
    o/

  2. MALIK IZAM on October 10, 2021 at 8:35 am

    wow

  3. Plethora of Paucity on October 10, 2021 at 8:36 am

    My next door neighbour in North Warrandyte has been poisoning rats because she’s too lazy to rat-proof her chicken coop. I haven’t seen or heard the local powerful owl population in months. Very sad. Fox and rabbit numbers increasing as a result.

  4. L0united on October 10, 2021 at 8:41 am

    are snakes a form of rodent control?

  5. oiavh on October 10, 2021 at 8:54 am

    Very happy to see you covering environmental as well as social issues besides gardening! Thank you

  6. Rens Spanjaard on October 10, 2021 at 8:54 am

    beautiful ! yes so we see everything is linked to each-other

  7. OmBadar67 on October 10, 2021 at 9:00 am

    Nighr life owls 👍👍👍

  8. Kym Little on October 10, 2021 at 9:02 am

    How do you humanly get rid of the rats after you catch them in the rat trap? There is no way I could kill them myself

  9. Green Gazelle on October 10, 2021 at 9:07 am

    Great footage and info. I’ll consider the owls if I need to buy rodent killers. A drowning trap for mice worked for my household.

  10. Jennifer Minshall on October 10, 2021 at 9:11 am

    Love these little birds..

  11. New Mind Garden on October 10, 2021 at 9:19 am

    Absolutely fabulous.. 🌿🌸🌸🌸🌸🌸👍👍

  12. Antinatalist Vegan on October 10, 2021 at 9:24 am

    Why on earth are we still using poisons? It is inhumane – for both intended and unintended victims.

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