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Otter Surveys

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Otter Surveys FAQ

Our experienced ecologists have an in-depth understanding of otter ecology and the legal framework surrounding this European Protected Species.

We’ll work closely with you to design tailored survey and mitigation strategies that satisfy all regulatory requirements, while also minimising impacts on otters and their habitats.

By providing the robust evidence base and practical solutions you need, we can help you keep your project on track and avoid costly delays. 

The validity of otter survey data can vary depending on the scale and nature of your development or if any changes to the site conditions have occurred. As a general guideline, we recommend updating your otter surveys every 1-2 years to ensure the information remains current and accurately reflects the presence and usage of otters within the zone of influence. This helps satisfy planning requirements and avoid any delays further down the line. 

If otters or their resting places are confirmed present within the zone of influence of your development, you will likely need to apply for a European Protected Species (EPS) licence from Natural England before you can proceed.

Our team can manage this licensing process on your behalf, working closely with you and the local planning authority to design and implement tailored mitigation strategies. This may involve creating artificial holts, installing otter-proof fencing, enhancing existing habitats, or providing compensatory measures to offset any unavoidable impacts. 

The standard otter survey process includes two key stages. First, we’ll conduct a presence/absence survey, thoroughly searching the site and surrounding areas for signs of otter activity. This initial assessment typically takes 1-2 days.

If the presence/absence survey identifies evidence of otters, we’ll then undertake more detailed monitoring surveys using techniques like remote camera traps and endoscopic inspections of potential holts. These monitoring surveys can take an additional 2-5 days, depending on the size of the site and the complexity of the otter activity found. 

Otter surveys can be conducted year-round, but the optimal time is typically during the winter months when vegetation is less dense. This makes it easier for our ecologists to identify key evidence of otter activity, such as spraints, footprints, and potential resting places (holts). However, we recommend scheduling surveys at a time that aligns with your project timeline, as otter activity and signs can vary throughout the year. 

Otters and their resting places (holts) are fully protected under the Wildlife and Countryside Act 1981 and the Conservation of Habitats and Species Regulations 2017. This means it is an offence to deliberately kill, injure or disturb otters, or to damage or destroy their breeding sites and resting places. If your development has the potential to impact otters or their habitats, you are legally required to undertake surveys and implement appropriate mitigation measures before proceeding. 

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