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Two more beavers released in Scotland

11/05/2010 12:40:09
uk/wildlife_june_09/beaver_4th_release_swt

A fourth release of beavers has taken place as part of the five-year Scottish Beaver Trial.

Are new beavers replacements for beavers that went missing last year?

A press release from the Royal Zoological Society of Scotland
May 2010. An additional breeding pair beavers has been released into the wild in Scotland as part of the Scottish Beaver Trial (SBT), a project which marks the first formal trial reintroduction of a native mammal back into the UK.

The Trial, which is a partnership project between the Royal Zoological Society of Scotland (RZSS) and the Scottish Wildlife Trust (SWT), aims to determine how beavers will prosper in Scottish habitats and to assess their impact in the current Scottish environment by monitoring them over a five-year trial period.

Norwegian beavers
The pair, which were transported from a holding facility at the Highland Wildlife Park and released into the wild on 4 May and after nearly a week in their new home, have been settling in well. This release follows the release of three beaver families, 11 beavers, into the Trial site at Knapdale Forest, Mid-Argyll, in May last year. All animal releases follow the conditions outline as part of the licence issued by the Scottish Government.

Missing beavers - No one told the boss!

In 2009 the Scottish Beaver Trial released 3 families into the Knapdale area. Not long afterwards, shots were heard and 1 adult female beaver went missing from the Creag Mor family. Subsequent to this, the juvenile female from this family went missing, and more recently the male has been taken back into captivity as he was evidently deteriorating.

The Loch Linne family also suffered, as the juvenile male died shortly after release and the juvenile female has now also disappeared. This pair have show signs of breeding this spring.

The Loch Coille Bhar family are apparently thriving and the female is showing some signs of pregnancy. 

Four breeding families?
Given these facts, it is odd that Simon Jones, SBT Project Manager, says "We feel that by having four breeding pairs in Knapdale our Trial stands the best chance of creating a viable population of beavers."

If that is the case why did they only release 3 pairs in the first place? And even with this new release there will only be a maximum of three families.

Artificial lodges
Prior to the release, two artificial lodges were created by the project team to provide temporary shelter until the pair can build a lodge of their own. Food and used bedding will be placed in these lodges to encourage them to settle in this new loch and make it their home.

Roisin Campbell-Palmer, SBT Project Leader said: "Whenever you release an animal into the wild it is a nerve-wracking moment and you want to give them the best chance at adapting to their new environment. Knapdale is ideal for beavers and already we have seen our other animals really making it home and doing what comes naturally to them. The two beavers are in good health, having passed all the required veterinary health checks and we are confident they should settle in well."

Campbell-Palmer continued: "Following their arrival from Norway, these beavers underwent a six-month quarantine period in England before being transported to the Highland Wildlife Park, where they have lived together for several months, giving them a chance to get used to life in Scotland. Even our harshest weather is nothing compared to the cold they have been used to. With plenty of food and space to explore we hope that this pair along with the others may start breeding in the coming months and years."

A fourth release of beavers has taken place as part of the five-year
Scottish Beaver Trial.
License permitted fourth family release

Simon Jones, SBT Project Manager, explained more about the decision to release a fourth family almost one year into the Trial.

Jones said: "It was always a possibility for us to release a fourth family of beavers as part of our Trial. Our licence from the Scottish Government permits us to release up to four families and we feel that by having four breeding pairs in Knapdale our Trial stands the best chance of creating a viable population of beavers. It is very important that we create the most natural conditions possible for our wild beavers to allow the results to inform decisions about the impact a wider beaver reintroduction might have on Scotland's environment.

Beaver tracking system doesn't seem to work too well

The beavers are being tracked by the SBT, yet 3 have gone missing since the start of the trial, some 27%. 

Beavers tracked
Over the course of the Trial, all our beavers will be tracked closely by the project team. The release of a fourth pair will provide important additional field data and hopefully show how neighbouring families of beavers interact with one another."

The Scottish Beaver Trial could determine whether or not beavers are reintroduced into the wild across Scotland. Twenty-five European countries have already reintroduced beavers to their wild lands. Beavers are a native species to the UK and were once a common sight before they were hunted to extinction by man. Beavers are known as a keystone species and bring many benefits to wetland environments and improve habitats for many other animals including invertebrates, birds and otters.

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