56
Siberische Boompieper
Anthus hodgsoni · Olive-backed Pipit
| id | 29411 | |
|---|---|---|
| datum | 25 oktober 2013 | |
| gemeente | Katwijk (ZH) | |
| locatie | Puinhoop, Katwijk aan Zee | |
| coördinaten | N 52.21375 O 4.4046 | |
| aantal, kleed | 1 | |
| soort waarneming | veldwaarneming | |
| status | Aanvaard, gepubliceerd in jaarverslag CDNA | |
| waarnemer(s) | W. Halfwerk et al | |
| opmerkingen | 25 October, Puinhoop, Katwijk aan Zee, Katwijk, Zuid-Holland, sound-recorded (W Halfwerk et al). Martin (2013) described a method to separate Olive-backed Pipit from Tree Pipit A trivialis by call, based on various parameters such as pitch and modulation. The CDNA used this method for sound-recordings of assumed Olive-backed recorded. The records at Vulkaan, Den Haag, Zuid-Holland, on 21 October 2011 are of two different individuals, both sound-recorded when passing this watchpoint. The totals for 2011 and 2012 now stand at six and 23 individuals, respectively. Several sound-recorded inviduals from 2013 and earlier years have only recently been submitted. Annual Report 2013. | |
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Wouter Halfwerk · Siberische Boompieper
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