SPCA New Zealand

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Animal Advocacy

Position Statements

Wildlife Tagging and Marking

SPCA advocates that the chosen method of tagging and marking minimises the welfare impacts on wildlife.

The welfare impact of methods of tagging and marking wildlife must be factored into the choice of which option to use for monitoring. This includes the species of animal, behaviours that would be negatively impacted by the weight of devices such as migration, or parenting behaviours that are interrupted by device attachment or interference, increased risk of predation or interference with ability to obtain food due to visibility of the device or marking.

SPCA supports the use of least invasive marking methods, such as painting or hair clipping.

SPCA opposes the use of tagging or marking wild animals where they are at risk of severe welfare harm, including collaring animals that are still growing, surgical implants, tissue removal or tattooing without anaesthesia and analgesia, and branding. Where invasive methods are used, steps must be taken to minimise pain and distress and reduce risk of infection.

Tagging and marking devices should be subjected to a welfare assessment where the benefits of the device clearly outweigh the potential harms to the animal and dependent offspring. There must also be clear objectives for attaching the device or marking the animal, methods of monitoring the device, and retrieving the device once it is no longer needed. The impacts of the capture and handling of animals to tag or mark should be considered in welfare assessment. Welfare impacts to the animal should be considered when determining the use of devices that require recapture and retrieval or ones that will fall off the animal over time.

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