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Groene Fitis

id	68266
datum	24 juni 2019
gemeente	Vlaardingen (ZH)
locatie	Holy
coördinaten	N 51.93801 O 4.3605
aantal, kleed	1, man
soort waarneming	veldwaarneming
status	Aanvaard, gepubliceerd in jaarverslag CDNA
waarnemer(s)	F Domenie et al via R Slaterus
opmerkingen	singing and calling, sound-recorded, videoed (van den Berg 2019, Slaterus 2019; Dutch Birding 41: 292, figure 1-2, 2019). A video with a sound recording of this bird was posted on Facebook by an inexperienced observer in the morning, asking which species was singing in her neighbourhood. It was quickly identified and reported as a Greenish Warbler P trochiloides. This is a very scarce but annual species, and since this was a Monday morning, it was only visited by a handful of local birders. It was not until a former committee member and bird sound specialist listened to the recordings around noon when alarm bells went off. To his ear, the calls sounded more like a Green Warbler and the song was also odd for Greenish. A thorough analysis of all taxa within the Greenish Warbler complex – later resulting in what must have been the finest submission of the year – revealed that indeed both the call and song fitted Green and excluded all other taxa. Unfortunately, it was one of the hottest days of the year and the bird was not heard nor seen after 11:00, so even the birder that revealed its true identity was not rewarded with a glimpse.

Karel Hoogteyling · Groene Fitis

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