Menu

Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

Foraging behaviour in chick-rearing Razorbills

The research collaboration between CAnMove and Stockholm Resilience Center, focusing on auks on Stora Karlsö, has resulted in a new paper on Razorbill foraging during breeding.
Razorbills
Photo: Tom Evans

Stora Karlsö is a 2.5 km2 island located in the western Baltic Sea; a major auk breeding site, with approximately 12 300 pairs of Razorbill, 15 700 pairs of Common Guillemot, and breeding populations of several other seabird species. In this study, Natalie Isaksson, Tom Evans, Susanne Åkesson and Olof Olsson investiged the foraging behaviour of Razorbills during the breeding season (the chick-rearing period), using a combination of global positioning system (GPS) and time-depth recorder (TDR). Five GPS tracks and nine TDR logs were retrieved from 12 Razorbills, and 7399 dives were analysed. The results showed that aside from dive shape, foraging behaviour was consistent with that reported at other colonies of Razorbills. The authors suggest that inconsistency in dive shape may be due to a bimodal foraging strategy, local prey behaviour or competition with the Common Guillemot Uria aalge.

To the paper: Foraging behaviour of Razorbills Alca torda during chick-rearing at the largest colony in the Baltic Sea in Bird Study.

Latest news

8 April 2019

A weekend with moving animals

A weekend with moving animals
4 April 2019

Is faster fuelling the key to faster migration?

Is faster fuelling the key to faster migration?
2 April 2019

Moving animals at Vattenhallen Science Center

Moving animals at Vattenhallen Science Center
28 March 2019

How different are willow warblers?

How different are willow warblers?
13 March 2019

Magnetic storms disrupt nocturnal migratory activity in songbirds

Magnetic storms disrupt nocturnal migratory activity in songbirds

Centre for Animal Movement Research
Evolutionary Ecology, Department of Biology
Ecology building S-223 62 Lund Sweden