BirdLife Finland, Finnish National Rarities Committee
A Redstart, Phoenicurus at Porvoo, Finland
(probable hybrid Black Redstart X Common Redstart, ochruros X phoenicurus)
compiled by Antero Lindholm
Introduction
- Porvoo, Uusimaa, Finland from 23.04.2001 onwards, originally found by Risto Saranto.
- Trapped, measured, photographed and ringed 25.4.2001 by Hannu Jännes, Antero Lindholm, Risto Saranto and Visa Rauste.
- Adult male (older than 2cy) because of uniform wear in greater coverts, even the outermost had greyish fringes.
- Helsinki Zool. Mus. ring number 165750J.
Pictures
The following pictures 1-4 (c) Visa Rauste
Picture 1.
Picture 2.
Picture 3.
Picture 4.
The following pictures 5-8 (c) Arto Juvonen
Picture 5.
Picture 6.
Picture 7.
Picture 8.
Song recording
Listen song, 235 kb, wav-format,
Finland, Porvoo 25.04.2001, copyright (c) Antero Lindholm
Measurements
Measured by H.Jännes and some literature data (comparison with
Ph.o.gibraltariensis, Ph.o.phoenicuroides and Ph. phoenicurus), primaries
numbered outwards:
| |
|
gibraltariensis |
phoenicuroides |
phoenicurus |
| Wing (max) |
89 |
79-90 (1) |
80-85 (2) |
77-84 (2) |
| Bill (to skull) |
15,6 |
13.6-17.0 (1) |
14.2-16.6 (2) |
13.6-15.9 (2) |
| Tarsus (Svenssons "standard technique"(3)) |
21,4 |
22.2-24.6 (1) |
22.9-25.0 (2) |
20.5-23.2 (2) |
| P10 > hand-cov. |
5 |
4-11 (2) |
|
2-8 (2) |
| Distance from the tip of wing: |
|
|
|
|
| P9 |
8 |
8-13 (2) |
|
5-10 (2) |
| P8 |
0 |
0-2.5 (2) |
|
0-1 (2) |
| P7 |
0 |
0 (2) |
|
0-1 (2) |
| P6 |
1 |
0-1 (2) |
|
1-3 (2) |
| P5 |
5.5 |
2-4 (2) |
|
5-10 (2) |
| P4 |
11 |
8-12 (2) |
|
10-14 (2) |
| P3 |
14 |
11-16 (2) |
|
|
| P2 |
17 |
|
|
|
| P1 |
20 |
16-21 (2) |
13-20 (2) |
17-22 (2) |
| S1 |
23 |
|
|
|
| Length of primary emarginations: |
|
|
|
|
| P8 |
32.5 |
32 (1, av.) |
|
present |
| P7 |
24 |
25 (1, av.) |
|
present |
| P6 |
19 |
21 (1, av.) |
|
present |
| P5 |
12 |
16 (1, av.) |
|
absent |
Discussion
The bird closely resembles the phoenicuroides subspecies of Black Redstart but
because of pale mantle colour, distinct white wing-patch and long wing, is most
likely a hybrid between Black Redstart and Common Redstart. Perhaps the song,
quite extensive pale patch on belly and vent also point in that direction.
The emarginations and wing-formula are much like Black Redstart but P8
is longer than found in most of the those (1). The bird cannot be samamisicus
Common Redstart because of wing-formula, extensive black throat-patch,
indistinctiviness of the white forehead patch and song. What was most likely
the same bird was present at the same place in September 2000.
Author of this article: Antero Lindholm.
Any comments welcome to Visa Rauste (email: visa.rauste@helsinki.fi).
Literature
- Nicolai et al., Limicola 1/96
- BWP
- Svensson, Identification to European Passerines
- More about this bird:
Lindholm A 2001: Apparent hybrid redstarts in Finland
resembling Black Redstart of eastern subspecies
phoenicuroides. British Birds 94 (11) 542-545
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