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Docker, S., Lowe, A. and Abrahams, C. 
ORCID: 0000-0003-0301-5585,
2020.
Identification of different song types in the European Nightjar Caprimulgus europaeus.
Bird Study.
ISSN 0006-3657
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1336333_Abrahams.pdf - Post-print Download (6MB) | Preview |
Abstract
Capsule: Two distinct song types were identified for male European Nightjars Caprimulgus europaeus with their relative frequency of use changing through the breeding season, indicating a possible link to paired status.
Aims: To test whether two song types could be defined in audio recordings and whether use differed in relation to the paired status of males.
Methods: Unattended acoustic recording devices were placed at a Nightjar study site in Nottinghamshire, United Kingdom, and recordings of churring vocalizations were made during two periods of the breeding season. These recordings were then analyzed to identify the presence/absence of the song terminal phrase and associated audible features.
Results: Two distinct song types were identified in the recorded audio data that differed in their terminal phrasing and overall song duration. The number of Nightjar songs with a terminal phrase increased significantly between the two sampling periods, from lower levels during the site arrival period, to higher levels during the first clutch initiation period.
Conclusion: This study showed that the use of Nightjar song types appears to vary through the breeding season, with males being more likely to produce song with a terminal phrase during the first clutch initiation period, when they are more likely to be paired or in the presence of a female. The unattended acoustic recording method may provide a minimally intrusive means of assessing the number of Nightjar breeding pairs and not just singing males.
| Item Type: | Journal article | ||||||
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| Publication Title: | Bird Study | ||||||
| Creators: | Docker, S., Lowe, A. and Abrahams, C. | ||||||
| Publisher: | Taylor & Francis | ||||||
| Date: | 18 June 2020 | ||||||
| ISSN: | 0006-3657 | ||||||
| Identifiers: |
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| Divisions: | Schools > School of Science and Technology | ||||||
| Record created by: | Jonathan Gallacher | ||||||
| Date Added: | 23 Jun 2020 16:11 | ||||||
| Last Modified: | 18 Jun 2021 03:00 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/40090 |
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