RESEARCH ARTICLE Multiple fragmented habitat-patch use in an urban breeding passerine, the Short-toed Treecreeper Katherine R. S. SnellID*, Rie B. E. Jensen, Troels E. Ortvad, Mikkel Willemoes, Kasper Thorup Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark a1111111111 *
[email protected] a1111111111 a1111111111 a1111111111 a1111111111 Abstract Individual responses of wild birds to fragmented habitat have rarely been studied, despite large-scale habitat fragmentation and biodiversity loss resulting from widespread urbanisa- tion. We investigated the spatial ecology of the Short-toed Treecreeper Certhia brachydac- OPEN ACCESS tyla, a tiny, resident, woodland passerine that has recently colonised city parks at the Citation: Snell KRS, Jensen RBE, Ortvad TE, northern extent of its range. High resolution spatiotemporal movements of this obligate tree- Willemoes M, Thorup K (2020) Multiple living species were determined using radio telemetry within the urbanized matrix of city fragmented habitat-patch use in an urban breeding passerine, the Short-toed Treecreeper. PLoS ONE parks in Copenhagen, Denmark. We identified regular edge crossing behaviour, novel in 15(1): e0227731. https://doi.org/10.1371/journal. woodland birds. While low numbers of individuals precluded a comprehensive characterisa- pone.0227731 tion of home range for this population, we were able to describe a consistent behaviour Editor: Jorge RamoÂn LoÂpez-Olvera, Universitat which has consequences for our understanding of animal movement in urban ecosystems. Autònoma de Barcelona, SPAIN We report that treecreepers move freely, and apparently do so regularly, between isolated Received: July 10, 2019 habitat patches. This behaviour is a possible driver of the range expansion in this species Accepted: December 29, 2019 and may contribute to rapid dispersal capabilities in certain avian species, including Short- toed Treecreepers, into northern Europe.