Agri Kultuur August / Agustus 2016 | Page 38

A typical caracal kill these studies. But eagles will often come down in broad daylight to feed on a lamb killed by these other predators, and this is why farmers so often think that the eagle was the culprit. Open carcass Bite wounds Various signs indicate where a carnivore has fed. Unlike eagles, carnivores have powerful teeth which can chew and shatter quite large bones. The carcasses of lambs eaten by jackals are well opened up, as shown here. Caracals, however, often feed from the rump. These predators are more capable of dragging their prey into cover, and will sometimes even try to bury it. You may find spoor at the scene, but remember that all these signs merely indicate that the animal has fed on the lamb, not necessarily killed it. Lambs killed by carnivores can easily be identified by skinning the carcass from the top of the neck and looking for the fatal bite wounds. These are usually found on the throat, but dogs are very messy killers and will bite all over the torso and limbs, leaving a lot of blood around. Wounds administered by carnivores are characterized by REGULARLY spaced canine puncture marks. These are found in pairs on either side of the body part that was bitten. The distance between the punctures can give an indication of the species responsible (for more details consult the book Predators and Farmers from the Endangered Wildlife Trust), Blood and bruising around the bite wound indicate that the lamb was killed in this way, but the bruising is never as extensive as that from an eagle wound. If you, as judge, do find the eagles guilty, there are mitigating circumstances to consider that could help prevent further losses. If predators are attracted to high densities of dead and dying lambs they may turn their attention to healthy lambs later on. To minimize losses, try to ensure that all carcasses and deserted lambs are moved away from the lambing camps. Concentrated lambing seasons make selection and management easier, and also enable you to have better control over losses due to predators. Supply sufficient food and protection from the elements. It is worthwhile to place a shepherd near the flock during the crucial 6 — 8 week lambing period (eagles seldom attack lambs older than ten days); and to conduct lambing in a manageable camp away from mountainous areas frequented by predators. Predators do need small mammals and birds to survive, they all play an important role in the well-being of your grazing. Try to conserve these smaller animals to stabilize predator counts. This will prevent large numbers of predators and eagles coming down to your lambing herds. A breeding pair of eagles on your farm will prevent other birds from coming in, because they will protect their breeding territory, Remember that eagles will only stay on your farm if there is sufficient natural prey. For more detailed management tips on preventing losses please consult the Eagles and Farmers booklet available from the Endangered Wildlife Trust. Merino ewe and lamb