Gloger’s ecogeographical rule and colour variation among Willow Tits Parus montanus

• Published in: Ornis Norvegica
• Main Authors: Hogstad, Olav, Thingstad, Per Gustav, Marc, Daverdin
• Format: Article in Journal/Newspaper
• Language: Norwegian; English
• Published: BirdLife Norway 2009
• Subjects: Norway; Parus; Fennoscandia
• Online Access: https://boap.uib.no/index.php/ornis/article/view/156; https://doi.org/10.15845/on.v32i0.156

The Willow Tit Parus montanus is distributed across the Palaearctic and into the Oriental zoogeographical region with 15 subspecies. P. m. borealis is the only subspecies in Fennoscandia. Based on 86 skinned museum specimens from Norway (south of 64 oN), we found relatively large variations in the c...