Red-throated Diver Gavia stellata [Pontoppidan, 1763] |
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| Jump to: Other Names | Trends & Distribution | Breeding & Survival | Biometrics | Books & Links |
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For details point at or click the |
Page updated:16-January-2013 |
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Order:
Gaviiformes
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Family: Gaviidae |
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BTO Codes:
RH, RETDI
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EURING No: 20 | |
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Number in Britain:
1300 pairs (Summer)
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Conservation Status:
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| Links to: Images Videos Sound | ||
Status in UK:
(A) Migrant/Resident Breeder, Passage/Winter Visitor
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Subspecies:
Monotypic
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Length:
61 cm
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Wingspan: 111 cm |
Weight:
M/F: 1.6 kg
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Scientific name from:
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L.: Gavia, a seabird described by Pliny and L.: stellaris=starry |
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World Distribution:
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BREEDS: n Eurasia & n North America, WINTERS: south to s Europe, se China and s US |
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Habitat:
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Shallow ponds & lakes |
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Diet:
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Primarily fish, captured by seizing in bill, also frogs, large invertebrates |
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TitBit:
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In Shetland this bird was considered one of the best weather indicators, short cries (or flying inland) indicated fine weather, long, plaintive ones (or flying out to sea) wet weather. |
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Population and Distribution |
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British Population Size:
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Summer:
1255 pairs
in 2006
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Winter:
17 thousand individuals
in 2001-06
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First Record:
1771
[Fossil evidence from
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Latest Survey:
Dillon, I.A. et al. (2009) Bird Study 56:147-157
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Conservation Status:
AMBER
because
Species of European Concern,
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Previous Assessments:
2002-2007
AMBER
1996-2001
AMBER
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| Races of Concern: | |||||
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Habitat Occupancy (in the Breeding Season):
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| No habitat data from BBS | |||||
| Migration routes: Map of foreign ringing recoveries and summary map from Time to Fly (in pop-up windows) | |||||
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European Population Size:
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Summer:
12 to 42 thousand pairs
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| Population Assesment from Birds in Europe | |||||
| Distribution in Europe mapped by the EBCC Atlas | |||||
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Listed on the Appendices/Schedules of:
WCA(I), WBD(I), Bern(II), Bonn(II), AEWA
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Breeding and Survival |
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Egg Size:
75 x 46 mm
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Egg Weight: 83.0 g (of which 8 % is shell) | ||||
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Number of Nest Records:
55
(more would be welcome!)
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Clutch Size:
2 eggs
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1.80 ± 0.40 (1 - 3) N = 478
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Incubation:
26- 29 days
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27.21 ± 1.59 (24 - 29.5) N = 478 | by the: Female (occ. Male) |
Fledging:
47 - 54days
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50.46 ± 5.37 (43 - 60) N = 593 |
as:
Precocial, downy
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First Clutches Laid:
12 Mar (19 Feb - 2 May)
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Number of Broods:
1
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| See trends in Breeding Productivity | |||||
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Number Ringed:
Annual Totals
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Adult Survival:
0.840
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Juvenile Survival:
0.370 (to age 2 )
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Age at First Breeding:
3
years
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Typical Lifespan:
9
years
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Maximum Recorded Age:
24 years 0 months 7 days (set in 2010)
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| Read a summary of Ringing Recoveries | |
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Biometrics |
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Ring Size:
Ke*
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Wing Length
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Adult: | 289.1 ± 9.7 Range 272.0 - 310.0 mm, (N = 21) |
| Juvenile: | Insufficient Data | |
| Male: | Insufficient Data | |
| Female: | Insufficient Data | |
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Weight
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Adult: | 1.67 ± 0.21 Range 1.39 - 2.03 kg , (N =20) |
| Juvenile: | Insufficient Data | |
| Male: | Insufficient Data | |
| Female: | Insufficient Data | |
| Seasonal: | Summer 1.67 ± 0.19 (N = 37) | |
| Source: | British Trust for Ornithology (2005) Ringing Scheme data | |
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Other Names |
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| Red-throated Loon | |
| Gaelic: Learga-ruadh | Welsh: Trochydd Gyddfgoch |
| Danish: Rřdstrubet lom | Dutch: Roodkeelduiker |
| Finnish: Kaakkuri | French: Plongeon catmarin |
| German: Sterntaucher | Hungarian: Északi búvár |
| Icelandic: Lómur | Irish: Lóma Rua |
| Italian: Strolaga minore | Norwegian: Smĺlom |
| Polish: Nur rdzawoszyi | Portuguese: Mobęlha-pequena |
| Spanish: Colimbo chico | Swedish: Smĺlom |
| Local Names:Rain Goose | |
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For More Information... |
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Books and Monographs:
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| Rankin, N. 1947 The haunts of British divers Collins, London [998 RAN] | |
| See Also: | |
Find scientific papers on  Google Scholar
or  Scirus by clicking the icon
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| Wikipedia entry | |
| BirdLife species page | |
| Recent sightings and information from BirdGuides | |
| All About Birds (from the Cornell Lab of Ornithology) | |
| Details from the Patuxent Bird Identification Infocenter | |
| Read State of the Nations Birds by Chris Mead | |
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