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Article History

Received: 10 June 2025

Accepted: 22 September 2025

First Online: 31 October 2025

Change Date: 19 January 2026

Change Type: Update

Change Details: The published version was updated replacing the "[1]" and "[2]" in the sentence "For future experimental work involving stereotaxic neurosurgery in Svalbard rock ptarmigan, we recommend either [1] a homogenous group of birds with body and brain mass analogous to the birds used for development of the chicken brain atlas [53] or [2], developing a new species-specific stereotaxic brain atlas." with "(1)" and "(2)".

Declarations

:

: Animal experimentation in this study was approved by the Norwegian Food Safety Authority (Mattilsynet; FOTS ID 29970), the national competent authority responsible for regulating animal research in Norway under the EU Directive 2010/63/EU. Mattilsynet’s regulatory role is equivalent to that of an Institutional Animal Care and Use Committee (IACUC) in other jurisdictions. The study was conducted in accordance with all relevant national and international ethical guidelines. Approval was granted prior to the start of the study. Documentation can be provided upon request.All animals were maintained under the care and ownership of UiT – The Arctic University of Norway during the study period. Capture and import of wild Svalbard rock ptarmigan were approved by the Norwegian Food Safety Authority (Mattilsynet; ref.: 2014/150134, 2017/064398, 2021/148676) and the Governor of Svalbard (Sysselmannen på Svalbard * ; ref.: 2014/00290-2, 17/00542-2, 17/00542-5). Documentation can be provided upon request. * this title has been changed to “Sysselmesteren på Svalbard” in 2021

: Not applicable.

: The authors declare no competing interests.