Bles, Titus Johannes van der (2024) The function of white anthropogenic material in jackdaw nests. Bachelor's Research Project (period 2b), Biology.
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Abstract
This study looked into possible explanations for the function of white anthropogenic material in jackdaw (Corvus monedula) nests. Field work was performed to collect data on the percentage of the surface of nestboxes that was covered with white anthropogenic nest material, also referred to as paper coverage throughout this essay. jackdaw nest boxes near Glimmen, The Netherlands. Statistical analyses have been performed on the observational data, which found that the effect of orientation on the average paper coverage in jackdaw nests is significant, where a circular pattern was observed and the cosine of orientation had a significant influence as well. Also, the effect of breeding phases on the average maximum paper coverage was significant, with the incubation phase showing a significant difference in paper coverage compared to the combined measurements from 5 and 10 days after the hatch date of the first egg. None of the hypotheses that were tested could be rejected, however, we conclude that the most likely explanations for the function of white anthropogenic material in jackdaw nests are the so-called “doormat hypothesis”, antimicrobial and anti-predator hypotheses, since the first is related to orientation and the latter are particularly related to the absence of chicks.
| Item Type: | Thesis (Bachelor's Research Project (period 2b)) |
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| Supervisor name: | Verhulst, S. |
| Degree programme: | Biology |
| Thesis type: | Bachelor's Research Project (period 2b) |
| Language: | English |
| Date Deposited: | 04 Jun 2024 09:22 |
| Last Modified: | 04 Jun 2024 09:22 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/32506 |
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