For those who love Chiffies
Jerusalem Bird Observatory, 19th Nov 2012
I am wrestling with this one and haven’t come to clear resolution its identity. So I wondered if regular readers might like to have a look. It’s a ‘brown Chiffchaff’- the only really outstanding Chiff seen in 10 days, amoung mostly typical collybita-like and slightly paler/greyer presumed abietinus types which uttered calls from mono to disyllabic mostly along the swee/ swee-oo theme.
This bird stood out in view of its brown tones, lacking obvious olive and yellow, though didn’t have a stand-out thick buffy ‘tristis supercilium’ – which is helpful on those that show it (I know that lots don’t!). We listened but didn’t notice anything that sounded like a typical tristis call. I did record something that sounded closer to the monosyllabic ‘swee’ call heard everywhere else in Israel. However when I saw the sonagram…
The bird’s call sounded ‘happy’ and closer to version of the ‘swee’ call and not so tristis-like to my ears. However the sonagram shows a rather flat note, arguably ‘tristis-shaped’ but about 1/2 kHz higher pitched than typical tristis with something of a downward inflection at the end. I have more pics of the bird and recordings of a good variety of Chiffchaff calls. So another blog post is brewing on the variety of Chiffchaff calls heard and recorded.
Listen to the call amoungst the other noises of the JBO garden: Listen Here
The Sonagram (sections from the recording):
I have musings but not arrived at clear explanation – yet. And it does raise some questions for me. Over to you.