Dutch Bird Alerts
23 april 2024 | ||
13:31 | FR | Alpine Accentor |
09:23 | ZL | Green-winged Teal |
09:10 | NH | Little Bunting |
22 april 2024 | ||
10:16 | NH | Little Bunting |
21 april 2024 | ||
15:54 | FR | Green-winged Teal |
14:42 | UT | Lesser Scaup |
11:05 | LI | Iberian Chiffchaff |
11:00 | NH | Little Bunting |
10:33 | ZL | Green-winged Teal |
10:02 | GE | Ring-necked Duck |
09:27 | ZL | Green-winged Teal |
08:23 | NH | Green-winged Teal |
20 april 2024 | ||
17:36 | ZL | Green-winged Teal |
13:19 | LI | Iberian Chiffchaff |
10:33 | ZL | Green-winged Teal |
08:58 | GE | Ring-necked Duck |
07:22 | NH | Little Bunting |
19 april 2024 | ||
18:42 | GE | Ring-necked Duck |
16:32 | ZL | Green-winged Teal |
15:41 | ZL | Green-winged Teal |
18 april 2024 | ||
20:37 | ZL | Green-winged Teal |
12:30 | ZL | Green-winged Teal |
10:21 | GE | Ring-necked Duck |
17 april 2024 | ||
18:34 | GE | Ring-necked Duck |
16:06 | ZL | Long-billed Dowitcher |
15:55 | ZL | Green-winged Teal |
07:17 | ZH | Marsh Sandpiper |
16 april 2024 | ||
20:01 | ZH | Marsh Sandpiper |
14:18 | GE | Ring-necked Duck |
11:30 | NH | Little Bunting |
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