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American Mink from the high plateau habitats and control the size of Kelp Gull populations on breeding sites. Increase the area ban on the introduction of salmonids to grebe breeding locations and help raise awareness of the impacts of introducing salmonids. Study the grebe's ecology in more detail in order to understand its population movements. There is planned research into the grebe's migration which is supported by the
Zoological Society of London's EDGE of Existence programme and Cornell University. Gather empirical data on population size and trends in population size. Continue to study the main threats to the grebe population and the reasons behind recent declines. The use of Patagonia National Park as a protected area where species management activities occur. The establishment of the species as a National Natural Monument.
31:
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conducted in
December 2006 and January 2009 revisited key known breeding sites initially surveyed in 1987 and 1998 also uncovered sharp population declines with numbers falling from 452 to 51 at Laguna del Sello, 700 to 0 at Laguna del Islote, 90 to 0 at Tolderia Grande and from 198 to 0 at Lagunas Encadenadas. Similarly, individuals were counted during the 2010-2011 breeding season and it was found that there has been a population decline of over 80% occurring over the last 26 years.
75:
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a very strong decline was detected on the
Strobel plateau (96%). However, it is speculated that the annual fluctuating numbers at breeding sites are driven by movements rather than an increase or decrease in population size. Despite this, the overall decline in population which was detected on wintering and breeding grounds appears to be real and is rapidly occurring.
478:. The key breeding lakes in the core of its range, lack any kind of legal protection, but the population of the hooded grebe on Meseta de Strobel have some protection due to its inaccessibility. A 30-minute documentary called 'Tango in the Wind' outlines conservation actions to save the hooded grebe.
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to the
Strobel plateau. Surveys made in 2006, 2009 and 2010–2011, found some lakes completely dry and with water levels 2–3 metres (6 ft 7 in – 9 ft 10 in) lower than in previous years. In addition, winter snowfall has reduced without a corresponding increase in precipitation
392:
In 2013 a simultaneous count across all plateaus known to have ever held grebes and virtually every lake which has historic records of the species was made. The results of this study indicated a count of 691 adults and 144 chicks in 12 colonies. Furthermore, in the summer of 2014/2015 771 adults, 138
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In the 2009/2010 and 2010/2011 breeding seasons the species was the most abundant on the plateaus Buenos Aires, Strobel and
Siberia - where five lakes contained almost 85% of the population. There was no population decline recorded on the Buenos Aires plateau between 1984/1985 and 2010/2011, however
405:
The population size was estimated by O'Donnell and
Fjeldsa (1997) to consist of 3,000-5,000 individuals. However, recent winter counts deduced that the minimum population size was 759 in 2010/2011. In new surveys, which occurred after recent and rapid declines in population size, the new estimation
273:
plateau, it killed more than half the adults in a breeding colony of two dozen nests. In 2012 to 2013 more losses to one Mink occurred with 15 adults and 7 juveniles killed at El
Cervecero and 10 adults and 5 chicks killed at the C199 colony in La Siberia plateau. As most of the grebe population is
486:
The recommendations below all come from the final report of the Hooded Grebe
Project Continue to survey the breeding colonies and winter censuses of estuaries and unfrozen lakes. Expand the 'Colony Guardian' approach to all active colonies. Devise and carry out a species recovery plan. Remove the
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on which the hooded grebe feeds. For example, in the week after hatching the chicks are fed aquatic beetles (Limnaea spp.). Nesting takes place in colonies of up to 130 pairs from
October to March. However, its rate of reproduction is very low as the average number of young reared per adult is 0.2
414:
Studies on the wintering grounds concluded that, since the 1990s, the population may have declined by as much as 40%. If we assume an exponential rate of decline then we can predict that there is a rapid population decline of above 80% over 21 years (three generations). This trend is supported by
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In 1997 the total population size was estimated to be 3,000-5,000 individuals and half of these were on Meseta de
Strobel. However, recent counts on wintering grounds have suggested a 40% decline occurring on the wintering grounds over a period of seven years. Additionally, surveys that were
247:
the hooded grebe is found on basaltic lakes in the Patagonian steppes at elevations of 500–1,200 m. Both saline and bitter salt lakes are used by non breeding flocks and some birds which winter on the coast of Argentina. The grebe requires aquatic vegetation in its breeding lakes (primarily
285:) and predation by kelp gulls. Volcanic eruptions in the area may have a negative short-term effect on population size due to heavy ash fall. However, ash also results in a long-term increase in the productivity of the wetlands.
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currently in the Buenos Aires plateau the grebe is under serious threat by the mink. The American mink also carries out surplus killing, thus meaning that a single mink may result in the loss of whole grebe colonies.
637:
Roesler, I., Fasola, L., Pereda, M.I., Montero, G., Imberti, S. and Casañas, H. 2015. Hooded Grebe Project - Final Report 2014-2015. Aves Argentinas/AOP, Asociación Ambiente Sur, Proyecto Macá Tobiano.
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juveniles and 12 colonies were counted across 18 lakes and 3 new lakes holding the species were identified. On the other hand, on the Strobel plateau the number of lakes holding the species decreased.
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Laguna Los Escarchados (the site where the species was discovered in 1974) was declared a reserve in 1979, but hold only a marginal population. In 1992, six individuals were recorded within
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and the wintering grounds are the río Coyle, río Gallegos and río Chico estuaries on the Atlantic coast of Santa Cruz. The species is also thought to be accidental in Magallanes, south
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The hooded grebe can be found in basaltic lakes during the breeding season. At the moment, the only recorded wintering sites are estuaries on the Atlantic coast of Argentina.
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is 1,000-1,200 individuals. With 660-800 of those individuals having reached full maturity. In 2013, a survey reported at total of 771 adults and 138 chicks.
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Other threats to the grebe population are: excessive grazing by sheep (this leads to erosion at land shores and limits the growth of vegetation), attacks by
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annually. Despite the lack of breeding success, the resources required for adult survival are abundant and this has resulted in a low adult mortality rate.
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Casañas, H., Imberti, S. and Roesler, K. 2013. Hooded Grebe Report. March 2013. Conicet, Asociación Ambiente Sur, Aves Argentinas, Santa Cruz, Argentina.
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219:. It grows to about 32 cm (13 in) in length, and is black and white in color. It is found in isolated lakes in the most remote parts of
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surveys on the breeding grounds, as when the breeding grounds were counted in the winter of 2010 and 2011 no juvenile Hooded Grebes were found.
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Imberti, S. Sturzenbaum, S. & McNamara, M. (2004) Actualización de la distribución invernal de macá tobiano
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Roesler, I.; Casañas, H.; Imberti, S. 2011. Final countdown for the Hooded Grebe? Neotropical Birding 9: 3-7
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314:. Observations of two individuals have also been made from a lake in Laguna Blanca in October 2013.
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462:) at some lakes, predation by the recently introduced American mink, the excessive grazing by
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Chebez, Juan Carlos. Los que se van: especies argentinas en peligro. No. 596 (822) CHE. 1999.
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Fjeldså, J. (1986) Feeding ecology and possible life history tactics of the Hooded Grebe
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The main features of the hooded grebe's appearance which can be used for identification.
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Roesler, I. Casañas, H. & Imberti, S. (2011) Final countdown for the Hooded Grebe?
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O'Donnell, C.; Fjeldsa, J. 1997. Grebes: a global action plan for their conservation.
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252:) which it uses to build its nest. The vegetation is also the habitat of the aquatic
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Johnson, A.; Serret, A. 1994. Hooded Grebe wintering grounds discovered. Cotinga: 9
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The breeding sites of this species are basaltic lakes in Santa Cruz, south-west
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Handbook of the Birds of the World. Volume 1: Ostrich to Ducks. Lynx Edicions
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A black head with a contrasting white forehead and a red, peaked forecrown.
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The hooded grebe is threatened by climate change and the introduction of
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At all stages of the grebe's life it is vulnerable to predation by the
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and spends winters along the coast of the same region. In 2012
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Konter, A. (2008) Decline in the population of Hooded Grebe
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Mainly white, but has a dark grey back up to its hind neck.
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and low breeding potential have been cited as threats.
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Grebes: a global action plan for their conservation
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531:10.2305/IUCN.UK.2019-3.RLTS.T22696628A145837361.en
269:. When the mink first arrived in 2010–2011 on the
709:y notas sobre su problemática de conservación.
555:. Birdlife International (2012). Archived from
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1421:Critically endangered biota of South America
1396:IUCN Red List critically endangered species
356:. Unsourced material may be challenged and
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376:Learn how and when to remove this message
742:O'Donnell, C. & Fjeldsa, J. (1997)
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800:Hooded Grebe Factsheet at Birdlife.org
783:. Living Wild in South America (2017)
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354:adding citations to reliable sources
805:Hooded Grebe at Edgeofexistence.org
517:IUCN Red List of Threatened Species
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553:"Recently recategorised species"
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215:found in the southern region of
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819:. The Internet Bird Collection.
781:"Tango in the Wind documentary"
506:BirdLife International (2019).
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1416:Critically endangered animals
482:Conservation actions proposed
470:Conservation actions underway
817:Images and videos at the IBC
451:at other times of the year.
476:Perito Moreno National Park
297:Distribution and population
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1411:Endemic birds of Argentina
860:: Podicipediformes ·
227:uplisted the species from
524:: e.T22696628A145837361.
433:Extensively white flanks.
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401:Population justification
250:Myriophyllum elatinoides
1426:Birds described in 1974
438:Status and conservation
648:"Hooded Grebe - eBird"
283:Tachyeres patachonicus
233:Critically Endangered
211:), is a medium-sized
55:Critically Endangered
1031:(or Slavonian grebe)
350:improve this section
279:flying steamer ducks
1024:Great crested grebe
694:Neotropical Birding
410:Trend justification
40:Conservation status
1406:Birds of Patagonia
1373:Podiceps-gallardoi
1141:Podiceps gallardoi
1111:Podiceps gallardoi
1035:Black-necked grebe
994:Hoary-headed grebe
969:White-tufted grebe
909:Australasian grebe
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557:the original
547:
535:. Retrieved
521:
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485:
473:
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422:
413:
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395:
391:
387:
372:
363:
348:Please help
336:
305:
302:Distribution
292:
282:
276:
271:Buenos Aires
264:
249:
242:
207:
206:
203:hooded grebe
202:
200:
178:
176:
160:
159:
147:
18:
1316:Neotropical
1251:iNaturalist
1135:Wikispecies
1056:Junin grebe
1046:Great grebe
924:Least grebe
890:Tachybaptus
537:12 November
243:During the
1390:Categories
1368:Xeno-canto
935:Podilymbus
657:2024-04-02
491:References
456:kelp gulls
419:Appearance
229:Endangered
960:Rollandia
730:74:40-58.
713:19:83-89.
652:ebird.org
337:does not
308:Argentina
221:Patagonia
217:Argentina
155:Species:
93:Kingdom:
87:Eukaryota
1401:Podiceps
1295:22696628
1269:10716919
1230:45512140
1168:22696628
1163:BirdLife
1120:Wikidata
1010:Podiceps
787:8 August
683:135-138.
366:May 2020
148:Podiceps
133:Family:
107:Chordata
103:Phylum:
97:Animalia
83:Domain:
60:IUCN 3.1
1321:hoogre1
1243:2482058
1217:hoogre1
1191:hoogre1
1150:Avibase
1126:Q874711
880:Species
711:Hornero
681:Cotinga
563:15 June
358:removed
343:sources
289:Habitat
261:Threats
239:Ecology
143:Genus:
123:Order:
113:Class:
58: (
1360:366611
1347:799136
1308:555329
1282:562346
862:family
854:Grebes
766:
696:9:3-7.
448:salmon
1355:WoRMS
1334:73392
1264:IRMNG
1212:eBird
1204:4KPNW
1188:BOW:
1181:69544
872:Genus
858:order
728:Ardea
464:sheep
444:trout
312:Chile
213:grebe
1303:NCBI
1290:IUCN
1277:ITIS
1256:4228
1238:GBIF
1176:BOLD
789:2017
764:ISBN
565:2012
539:2021
522:2019
446:and
341:any
339:cite
225:IUCN
201:The
117:Aves
1225:EoL
1199:CoL
679:?.
526:doi
352:by
231:to
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