Details

Autor(en) / Beteiligte

• Han, Zheng
• Wang, Hai-Tao
• Kardynal, Kevin J.
• Hobson, Keith A.
• Shang, Wei-Ping
• Zhang, li-shi
• Jiang, Yun-lei
• Jiguet, Frédéric

Titel

Stable isotopes (δ2H) in feathers identify non-breeding origins of the endangered Jankowski’s Bunting

Ist Teil von

• Journal of ornithology, 2021-10, Vol.162 (4), p.987-995

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• There is sparse and contradictory information concerning the migratory status and non-breeding range of the endangered Jankowski’s Bunting Emberiza jankowskii , precluding the possible development of conservation measures dedicated to protecting habitats occupied across the full-annual cycle. To unravel the migratory strategy and identify the non-breeding grounds of Jankowski’s Bunting, we collected feathers on breeding birds in Inner Mongolia, analysed their deuterium concentrations (δ 2 H f ) and produced probabilistic geographic assignments to origin to assess where these feathers were likely grown. We compared results from this exercise to current knowledge of the breeding and non-breeding range to evaluate likely moult origins thereby informing migratory connectivity in this species. Winter moulted feathers were not grown in the same isotopic environment than summer-grown feathers, attesting some non-breeding dispersive movements, and geographic assignments favour the hypothesis of a short-distance dispersion during the non-breeding season.