A1 Refereed original research article in a scientific journal
The breeding biology of the Redstart Phoenicurus phoenicurus in a marginal area of Finland
Authors: Veistola S, Lehikoinen E, Eeva T, Iso-Iivari L
Publisher: BRITISH TRUST ORNITHOLOGY
Publication year: 1996
Journal: Bird Study
Journal name in source: BIRD STUDY
Journal acronym: BIRD STUDY
Volume: 43
First page : 351
Last page: 355
Number of pages: 5
ISSN: 0006-3657
DOI: https://doi.org/10.1080/00063659609461028
Abstract
The breeding biology of the Redstart was studied in its marginal breeding area in northernmost Finland during the years 1982-1994. The mean clutch size was higher than in move southern populations. Losses during the egg and nestling stages were negligible: hatching success (hatchlings per egg) and fledging success (fledglings per hatchling) were 0.91 and 0.89, respectively. Only heavy rainfall decreased nestling survival. Our results show that population size is stable and breeding success is good in this marginal breeding area compared to other breeding grounds. The population size fluctuated in parallel with the vole cycle as expected if small (mammal) predators switch to taking birds when vole numbers are low.
The breeding biology of the Redstart was studied in its marginal breeding area in northernmost Finland during the years 1982-1994. The mean clutch size was higher than in move southern populations. Losses during the egg and nestling stages were negligible: hatching success (hatchlings per egg) and fledging success (fledglings per hatchling) were 0.91 and 0.89, respectively. Only heavy rainfall decreased nestling survival. Our results show that population size is stable and breeding success is good in this marginal breeding area compared to other breeding grounds. The population size fluctuated in parallel with the vole cycle as expected if small (mammal) predators switch to taking birds when vole numbers are low.
UTU Research Portal