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niooknaw.bsky.social
New publication: Long-distance dispersal is asymmetrical with respect to age, sex and breeding latitude in a long-lived monogamous bird. #barnaclegoose #avianmigration #flywaypopulation #longdistancedispersal
doi.org/10.1111/1365...
Figure 1 in de Vries et al. (2025): "Locations of the main study colonies for the three subpopulations (a), development of the barnacle goose Russia/Germany and Netherlands flyway population and North Sea and Baltic Sea subpopulations (b) based on population counts, and an overview of the density in ringing effort in the three subpopulations (c). The Barents Sea subpopulation is represented here in red, the Baltic Sea subpopulation in yellow, while the North Sea subpopulation is represented in blue. Data on population sizes were collected from van der Jeugd et al. (2009), Koffijberg et al. (2020), Isaksen (2020), Nagy et al. (2021) and Jensen et al. (2022). Since flyway and subpopulation counts are unavailable after 2006 and incomplete for the Baltic Sea after 2002, these have been supplemented with sizes estimated in an integrated population model, indicated by diamond-shaped dots (Baveco et al., 2020; Jensen et al., 2022)."
September 19, 2025 at 11:51 AM