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Id | 5791 | ||||||||||||
Family | Leaf Warblers ~ Løvsangere ~ Mosquiteros (Phylloscopidae) | ||||||||||||
Species |
Common Chiffchaff (Phylloscopus collybita) Gransanger ~ Mosquitero Común ~ Gransångare |
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Subspecies | abietinus? | ||||||||||||
Locality |
Kalvebod Fælled, Denmark
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Date | 2024-04-16 | ||||||||||||
Sex, Age, Comment |
Pumpehus-broen og langs materielgården. Originally suspected to be a tristis. Bird 3. As with the other bird, 5788+5790, this one was also still present today, third day. Inverted u-spectrogram, 4-5+ Khz, and constantly calling with this call according to xenocanto goes well with abietinus. Tristis shows a spectrogram flatter at the beginning and falling toward the end, and lower hertz. Initially, listening to the calls in the field, however, I was not able to detect much difference, and I have to admit that I was surprised to see that my spectrograms show this u-shape, since I hear it as a flat linear sound. One might speculate whether these birds come from a part close to the tristis population in northern Siberia, the contact zone where voices during learning are influenced by different sound pools. |
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Collection | |||||||||||||
Same bird | 174 | ||||||||||||
Sound |
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