<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In 2018 and 2019, the breeding success of two Common Tern colonies on artificial lakes near the River Sava in Zagreb, Croatia, was studied. The colonies were visited weekly from May to July and we collected data on phenology, number of breeding pairs, clutch size as well as egg and chick survival. We also conducted a comparison between early and late breeders. Hatching and fledging success was within previously observed ranges, apart from a low hatching success on Siromaja in 2019. The smaller colony on Siromaja had a higher productivity in both years than the colony on Rakitje, although in 2018 an avian pox virus killed much of the late chicks on Rakitje. Early breeders seem to have had higher hatching success and average clutch size. Furthermore, a greater proportion of them managed to hatch all their eggs compared to late breeders, but the differences were not statistically significant. Our study provided baseline data for future monitoring of phenology and breeding success with regard to the management of breeding colonies.</p></abstract>

In 2018 and 2019, the breeding success of two Common Tern colonies on artificial lakes near the River Sava in Zagreb, Croatia, was studied. The colonies were visited weekly from May to July and we collected data on phenology, number of breeding pairs, clutch size as well as egg and chick survival. We also conducted a comparison between early and late breeders. Hatching and fledging success was within previously observed ranges, apart from a low hatching success on Siromaja in 2019. The smaller colony on Siromaja had a higher productivity in both years than the colony on Rakitje, although in 2018 an avian pox virus killed much of the late chicks on Rakitje. Early breeders seem to have had higher hatching success and average clutch size. Furthermore, a greater proportion of them managed to hatch all their eggs compared to late breeders, but the differences were not statistically significant. Our study provided baseline data for future monitoring of phenology and breeding success with regard to the management of breeding colonies.

First data on breeding success of Croatian inland colonies of Common Tern <italic>Sterna hirundo</italic>

Faculty of Science, Department of Biology

Acrocephalus

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

First data on breeding success of Croatian inland colonies of Common Tern 

In 2018 and 2019, the breeding success of two Common Tern colonies on artificial lakes near the River Sava in Zagreb, Croatia, was studied. The colonies were...

First data on breeding success of Croatian inland colonies of Common Tern Sterna hirundo

Online veröffentlicht: 03. Apr. 2020

Seitenbereich: 97 - 103

Eingereicht: 05. Sept. 2019

Akzeptiert: 10. Jan. 2020

DOI: https://doi.org/10.1515/acro-2019-0007

Schlüsselwörter
phenology, clutch size, hatching success, fledging success, productivity

© 2019 Miloš Martinović et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

First data on breeding success of Croatian inland colonies of Common Tern Sterna hirundo

Online veröffentlicht: 03. Apr. 2020

Seitenbereich: 97 - 103

Eingereicht: 05. Sept. 2019

Akzeptiert: 10. Jan. 2020

DOI: https://doi.org/10.1515/acro-2019-0007

Schlüsselwörterphenology, clutch size, hatching success, fledging success, productivity

© 2019 Miloš Martinović et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
phenology, clutch size, hatching success, fledging success, productivity