Dutch Bird Alerts
| 14 september 2024 | ||
| 15:17 | NH | Rosy Starling |
| 14:14 | NH | Barred Warbler |
| 14:07 | NH | Ring-necked Duck |
| 11:49 | NH | Lesser Scaup |
| 09:36 | NH | Rosy Starling |
| 08:55 | NH | Buff-breasted Sandpiper |
| 08:29 | FR | Sabine's Gull |
| 13 september 2024 | ||
| 16:39 | NH | Lesser Scaup |
| 15:20 | NH | Buff-breasted Sandpiper |
| 15:05 | NH | Barred Warbler |
| 14:15 | FR | Pectoral Sandpiper |
| 09:00 | NH | Buff-breasted Sandpiper |
| 12 september 2024 | ||
| 18:49 | NH | Pectoral Sandpiper |
| 18:05 | NH | Lesser Scaup |
| 10:30 | NH | Buff-breasted Sandpiper |
| 10:08 | GR | Black-winged Kite |
| 08:43 | OV | Pectoral Sandpiper |
| 11 september 2024 | ||
| 16:38 | NH | Lesser Scaup |
| 11:54 | NH | Buff-breasted Sandpiper |
| 10:49 | ZH | Balearic Shearwater |
| 10:38 | ZL | Sabine's Gull |
| 10:02 | ZH | Sabine's Gull |
| 09:52 | FR | Balearic Shearwater |
| 09:06 | NH | Sabine's Gull |
| 10 september 2024 | ||
| 16:00 | ZL | Sabine's Gull |
| 11:05 | NH | Buff-breasted Sandpiper |
| 10:30 | OV | Black-winged Pratincole |
| 10:10 | NH | Pectoral Sandpiper |
| 09:28 | NH | Lesser Scaup |
| 9 september 2024 | ||
| 18:02 | ZL | Balearic Shearwater |
Siberische Boompieper
Anthus hodgsoni · Olive-backed Pipit
Datum & Tijd
25-09-2022 07:57
Locatie
| Atlasblok | NH · 04-54-53 |
|---|---|
| GPS | 53.16226 4.82382 |
| RD | 117.318 575.208 |
| De Krim De Slufter Eierlandsche duinen |
Tijd & Gedrag
Onbekend
Zekerheid
Determinatie zeker, geen kleedgegevens
Gehoord via
waarneming.nl
Extra informatie
1 ex. roepend
Overvliegend naar noord, alleen gehoord, niet gezien. Geluidsopname van 3 bruikbare roepjes voor analyse aan de hand van Martin 2013. https://avesrares.wordpress.com/2013/09/27/identification-of-olive-backed-and-tree-pipit-by-call/
Maximale frequentie 8,3 kHz (eerste roep). Gemiddelde waardes van de 3 roepjes: MSF 7,67 kHz; gradient 12,3; parameter 1: 94; tijdsduur van 1 modulatie 9,45 ms; parameter 2: 885. Opvallend is het lage aantal modulaties, past beter bij Siberische boompieper (10-15) dan bij boompieper (15-25).
Waargenomen door:
Job ten Horn