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{{Short description|Named after Leonard Cutler Sanford}} | ||
| {{Speciesbox | |||
| {{speciesbox | |||
| | name = Sanford's sea eagle | | name = Sanford's sea eagle | ||
| | status = VU | | status = VU | ||
| | status_system = IUCN3.1 | | status_system = IUCN3.1 | ||
| | status_ref = {{sfn|IUCN Red List|2012}} | | status_ref = {{sfn|IUCN Red List|2012}} | ||
| | |
| status2 = CITES_A2 | ||
| | status2_system = CITES | |||
| | status2_ref = <ref>{{Cite web|title=Appendices {{!}} CITES|url=https://cites.org/eng/app/appendices.php|access-date=2022-01-14|website=cites.org}}</ref> | |||
| | genus = Icthyophaga | |||
| | species = sanfordi | | species = sanfordi | ||
| | authority = ], 1935<ref name=desc>{{cite journal|journal=American Museum Novitates | issue=828|year=1936|title=Birds collected during the Whitney South Sea Expedition. 31, Descriptions of twenty-five species and subspecies |pages=1–20| hdl= 2246/3965 |author=Mayr, E}}</ref> | | authority = (], 1935)<ref name=desc>{{cite journal|journal=American Museum Novitates | issue=828|year=1936|title=Birds collected during the Whitney South Sea Expedition. 31, Descriptions of twenty-five species and subspecies |pages=1–20| hdl= 2246/3965 |author=Mayr, E}}</ref> | ||
| }} | }} | ||
| '''Sanford's sea eagle''' ('' |
'''Sanford's sea eagle''' ('''''Icthyophaga sanfordi'''''), also known as '''Sanford's fish eagle''' or the '''Solomon eagle''', is a ] ] to the ]. | ||
| ==Taxonomy== | ==Taxonomy== | ||
| Sanford's sea eagle was discovered by and named after ], a trustee for the ]. The first description was by ] in 1935. The "sea eagle" name is used to distinguish the ] of the genus '']'' from the closely related '']'' true fish eagles.{{sfn|del Hoyo|Elliott|Sargatal|1994|p=121}} The species was described in 1935 by ] who noticed that earlier observers had overlooked it, thinking it was a juvenile of the ].<ref name=desc/> It forms a ] with the ]. As in other sea eagle species pairs, the other ] is white-headed. These two are ]ally very close, it seems; their lineages separated not longer than 1 million years ago, probably only in the ], a few 100,000 years ago.{{sfn|Wink|Heidrich|Fentzloff|1996|p=}}{{page needed|date=May 2011}}<ref name="reservation-Wink" /> Both share a dark ], ], and eyes with the other ]n sea eagles. | Sanford's sea eagle was discovered by and named after ], a trustee for the ]. The first description was by ] in 1935. The "sea eagle" name is used to distinguish the ] of the genus '']'' from the closely related '']'' true fish eagles.{{sfn|del Hoyo|Elliott|Sargatal|1994|p=121}} The species was described in 1935 by ] who noticed that earlier observers had overlooked it, thinking it was a juvenile of the ].<ref name=desc/> It forms a ] with the ]. As in other sea eagle species pairs, the other ] is white-headed. These two are ]ally very close, it seems; their lineages separated not longer than 1 million years ago, probably only in the ], a few 100,000 years ago.{{sfn|Wink|Heidrich|Fentzloff|1996|p=}}{{page needed|date=May 2011}}<ref name="reservation-Wink" /> Both share a dark ], ], and eyes with the other ]n sea eagles. | ||
| == Description == | == Description == | ||
| It can reach a length |
It can reach a length of {{convert|70|–|90|cm|in|abbr=on}} and a weight between {{convert|1.1|and|2.7|kg|lb|abbr=on}}. Its wingspan is {{convert|165|–|185|cm|ft|abbr=on}}. It is the only large ] on the Solomon Islands. The eagles inhabit coastal forests and lakes up to an altitude of about 1500 m above sea level.{{sfn|del Hoyo|Elliott|Sargatal|1994|p=121}} | ||
| ⚫ | Their ] is whitish brown to bright brown on the head and the neck. The underparts are brown to reddish brown and dark brown. The upperparts are darkish brown to gray-black. The eyes are bright brown. Uniquely among sea eagles, this species has an entirely dark tail throughout its life. | ||
| ⚫ | |||
| ==Breeding== | ==Breeding== | ||
| The breeding season is from August to October. The nest consists of two ]. | The breeding season is from August to October. The nest consists of two ]. | ||
| ==Diet== | ==Diet== | ||
| The diet consists of mainly of tideline carrion, fish, ]s, ]s, ], and ]s, and more rarely birds and ]s snatched from the ] ].{{sfn|del Hoyo|Elliott|Sargatal|1994|p=121}}<ref>Mikula, P., Morelli, F., Lučan, R. K., Jones, D. N., & Tryjanowski, P. (2016). Bats as prey of diurnal birds: a global perspective. Mammal Review.</ref> It has also been reported to feed opportunistically on the ].{{sfn|Heinsohn|2000|pp=245–246}} | The diet consists of mainly of tideline carrion, fish, ]s, ]s, ], and ]s, and more rarely birds and ]s snatched from the ] ].{{sfn|del Hoyo|Elliott|Sargatal|1994|p=121}}<ref>Mikula, P., Morelli, F., Lučan, R. K., Jones, D. N., & Tryjanowski, P. (2016). Bats as prey of diurnal birds: a global perspective. Mammal Review.</ref> It has also been reported to feed opportunistically on the ].{{sfn|Heinsohn|2000|pp=245–246}} | ||
| ] | |||
| ==In culture== | ==In culture== | ||
| The eagle is often illustrated on postage stamps of the Solomon Islands. | The eagle is often illustrated on postage stamps of the Solomon Islands. | ||
| == Footnotes == | == Footnotes == | ||
| ⚫ | {{Commons category|Haliaeetus sanfordi}} | ||
| ⚫ | {{Wikispecies|Haliaeetus sanfordi}} | ||
| {{Reflist | {{Reflist | ||
| | refs = | | refs = | ||
| Line 64: | Line 74: | ||
| | isbn = 84-87334-15-6 | | isbn = 84-87334-15-6 | ||
| }} | }} | ||
| * {{cite journal| last = Heinsohn| first = Tom| year = 2000| title = Predation by the White-breasted Sea Eagle ''Haliaeetus leucogaster'' on phalangerid possums in New Ireland, Papua New Guinea| journal = Emu| volume = 100| issue = 3| pages = 245–46| doi = 10.1071/MU00913}} | * {{cite journal| last = Heinsohn| first = Tom| year = 2000| title = Predation by the White-breasted Sea Eagle ''Haliaeetus leucogaster'' on phalangerid possums in New Ireland, Papua New Guinea| journal = Emu| volume = 100| issue = 3| pages = 245–46| doi = 10.1071/MU00913| bibcode = 2000EmuAO.100..245H}} | ||
| * {{cite journal| |
* {{cite journal| last1 = Wink | first1 = M.| last2 = Heidrich | first2 = P.| last3 = Fentzloff | first3 = C.| year = 1996| doi = 10.1016/S0305-1978(96)00049-X| title = A mtDNA phylogeny of sea eagles (genus ''Haliaeetus'') based on nucleotide sequences of the cytochrome ''b'' gene| journal = Biochemical Systematics and Ecology| volume = 24| issue = 7–8| pages = 783–791| bibcode = 1996BioSE..24..783W| url = http://www.uni-heidelberg.de/institute/fak14/ipmb/phazb/pubwink/1996/20_1996.pdf}} | ||
| ⚫ | {{ |
||
| ⚫ | {{Wikispecies|Haliaeetus sanfordi}} | ||
| {{Taxonbar|from=Q936424}} | {{Taxonbar|from=Q936424}} | ||
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Latest revision as of 03:18, 18 December 2024
Named after Leonard Cutler Sanford
| Sanford's sea eagle | |
|---|---|
| Conservation status | |
 Vulnerable (IUCN 3.1) | |
| CITES Appendix II (CITES) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Accipitriformes |
| Family: | Accipitridae |
| Genus: | Icthyophaga |
| Species: | I. sanfordi |
| Binomial name | |
| Icthyophaga sanfordi (Mayr, 1935) | |
Sanford's sea eagle (Icthyophaga sanfordi), also known as Sanford's fish eagle or the Solomon eagle, is a sea eagle endemic to the Solomon Islands archipelago.
Taxonomy
Sanford's sea eagle was discovered by and named after Dr Leonard C. Sanford, a trustee for the American Museum of Natural History. The first description was by Ernst Mayr in 1935. The "sea eagle" name is used to distinguish the species of the genus Haliaeetus from the closely related Ichthyophaga true fish eagles. The species was described in 1935 by Ernst Mayr who noticed that earlier observers had overlooked it, thinking it was a juvenile of the white-bellied sea eagle. It forms a superspecies with the white-bellied sea eagle. As in other sea eagle species pairs, the other taxon is white-headed. These two are genetically very close, it seems; their lineages separated not longer than 1 million years ago, probably only in the Middle Pleistocene, a few 100,000 years ago. Both share a dark bill, talons, and eyes with the other Gondwanan sea eagles.
Description
It can reach a length of 70–90 cm (28–35 in) and a weight between 1.1 and 2.7 kg (2.4 and 6.0 lb). Its wingspan is 165–185 cm (5.41–6.07 ft). It is the only large predator on the Solomon Islands. The eagles inhabit coastal forests and lakes up to an altitude of about 1500 m above sea level.
Their plumage is whitish brown to bright brown on the head and the neck. The underparts are brown to reddish brown and dark brown. The upperparts are darkish brown to gray-black. The eyes are bright brown. Uniquely among sea eagles, this species has an entirely dark tail throughout its life.
Breeding
The breeding season is from August to October. The nest consists of two eggs.
Diet
The diet consists of mainly of tideline carrion, fish, molluscs, crabs, tortoises, and sea snakes, and more rarely birds and megabats snatched from the rainforest canopy. It has also been reported to feed opportunistically on the northern common cuscus.
In culture
The eagle is often illustrated on postage stamps of the Solomon Islands.
Footnotes
- IUCN Red List 2012.
- "Appendices | CITES". cites.org. Retrieved 2022-01-14.
- ^ Mayr, E (1936). "Birds collected during the Whitney South Sea Expedition. 31, Descriptions of twenty-five species and subspecies". American Museum Novitates (828): 1–20. hdl:2246/3965.
- ^ del Hoyo, Elliott & Sargatal 1994, p. 121.
- Wink, Heidrich & Fentzloff 1996.
- Note that Wink et al.'s reservation about the high rate of molecular evolution have proven well justified; the 2% per 4 million years seem if anything an overestimate. In addition, as the provenance of specimens is not noted, genetic introgression due to hybridzation cannot be excluded, as the species' ranges touch. This is unlikely due to marked differences in behavior and habitat preferences however.
- Mikula, P., Morelli, F., Lučan, R. K., Jones, D. N., & Tryjanowski, P. (2016). Bats as prey of diurnal birds: a global perspective. Mammal Review.
- Heinsohn 2000, pp. 245–246.
- References
- BirdLife International (2012). "Haliaeetus sanfordi". IUCN Red List of Threatened Species. 2012. Retrieved 26 November 2013.{{cite iucn}}: old-form url (help)
- "Species factsheet: Sanford's Sea-eagle Haliaeetus sanfordi". birdlife.org. BirdLife International. 2011. Retrieved 2011-05-25.
- Cited works
- del Hoyo, J.; Elliott, A.; Sargatal, J., eds. (1994). Handbook of the Birds of the World. Vol. 2. Barcelona: Lynx Edicions. ISBN 84-87334-15-6.
- Heinsohn, Tom (2000). "Predation by the White-breasted Sea Eagle Haliaeetus leucogaster on phalangerid possums in New Ireland, Papua New Guinea". Emu. 100 (3): 245–46. Bibcode:2000EmuAO.100..245H. doi:10.1071/MU00913.
- Wink, M.; Heidrich, P.; Fentzloff, C. (1996). "A mtDNA phylogeny of sea eagles (genus Haliaeetus) based on nucleotide sequences of the cytochrome b gene" (PDF). Biochemical Systematics and Ecology. 24 (7–8): 783–791. Bibcode:1996BioSE..24..783W. doi:10.1016/S0305-1978(96)00049-X.