Nesting biology of the Hooded Crow Corvus corone cornix in a mixed residential–agricultural area in southern Sweden

Authors

  • Rebecca Hessel Research Yrjölä ltd. and Department of Biosciences, University of Helsinki
  • Johan Elmberg Aquatic biology and chemistry, Kristianstad University

DOI:

https://doi.org/10.34080/os.v20.22633

Keywords:

breeding success, nest site selection, population studies

Abstract

We studied 11 active and 29 old nests of Hooded Crows Corvus corone cornix in a mixed residential-farmland landscape (3.6 km2) in southern Sweden in 2009. The density of active nests was 3.06/km2 land area and 7.33/km2 forest area. Thirty-eight nests were in pine-dominated forest and two in private gardens. All nests (active and old) were in pine trees Pinus sylvestris, and sample plots around nest trees had the following characteristics (means): 350 tree stems/hectare, 1,487 bushes/ hectare, and canopy cover 8%. Distance to the nearest active Crow nest averaged 234 m, but variation was large. Mean distance from nests to nearest forest edge was 19 m and to the nearest inhabited building 68 m. Nests were placed near the tree top (mean height 11 m) in all cardinal directions but with a significant bias towards the south. Seven out of 11 (64%) active nests produced fledglings (mean 1.2 nestling/successful nest). Breeding success was higher in nests that were close to another crow nest. Compared with previous studies, hatching success was high but final fledgling production was low.

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Published

2010-04-01

How to Cite

Hessel, R., & Elmberg, J. (2010). Nesting biology of the Hooded Crow Corvus corone cornix in a mixed residential–agricultural area in southern Sweden. Ornis Svecica, 20(2), 87–92. https://doi.org/10.34080/os.v20.22633

Issue

Section

Research Papers

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