San Diego Zoo Safari Park

Coordinates: 33°05′59″N 117°00′05″W / 33.099703°N 117.001525°W / 33.099703; -117.001525
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San Diego Zoo Safari Park
Park entrance sign
Entrance to the park
Map
33°05′59″N 117°00′05″W / 33.099703°N 117.001525°W / 33.099703; -117.001525
Date openedMay 10, 1972
LocationCity of San Diego

Mailing address:

15500 San Pasqual Valley Rd.
Escondido, California 92027[1][2][3]
Land area1,800 acres (7.3 km2) (2.8 sq mi)[4]
No. of animals3500+[4]
No. of species400+[4]
MembershipsAZA[5]
Major exhibitsAfrican Plains, African Outpost, African Woods, Asian Savanna, Condor Ridge, Elephant Valley, Gorilla Forest, Hidden Jungle, Lion Camp, Nairobi Village, Tiger Territory
Websitesdzsafaripark.org

The San Diego Zoo Safari Park, originally named the San Diego Wild Animal Park until 2010, is an 1800-acre (730 ha) zoo in the San Pasqual Valley area of San Diego, California, near Escondido. It is one of the largest tourist attractions in San Diego County. The park houses a large array of wild and endangered (some critically) animals from every continent, except Antarctica; this includes the largest, most comprehensive collection of hoofed mammals (ungulates) in the world. The park is in a semi-arid environment, about 30 miles (48 km) inland from the Pacific Ocean, giving it a year-round ‘feeling’ of being in Africa, with one of its most notable attractions being the Africa Tram, a half-hour guided tram ride which showcases the expansive ‘grassland’ exhibits. These free-range enclosures house the majority of the park's larger species, such as numerous antelopes, giraffes, buffalo, cranes, and rhinoceros, among others. The park is also noted for its California condor breeding program. When booked in-advance (and with additional fees), the park also offers several longer, more in-depth safari options, some of which involve riding in an open-top truck to feed the animals in the field enclosures.

The park, visited by 2 million people annually, houses 3,000 animals representing roughly 400 species, as well as 3,500 plant species.[4]

Depending on the season, the park has about 400 to 600 employees. The park is also Southern California's quarantine center for zoo animals imported into the United States through San Diego.

The park has the world's largest veterinary hospital.[citation needed] Next to the hospital is the Institute for Conservation Research, which houses the San Diego Zoo's and Safari Park's Frozen Zoo, a database and storage facility containing priceless blood, tissue and sperm samples, as well as embryos and DNA, of numerous endangered, vulnerable and threatened species.

This Safari Park and the San Diego Zoo are both run by the nonprofit San Diego Zoo Wildlife Alliance (formerly the Zoological Society of San Diego). The park is 32 miles (51 km) north of the zoo, off of Interstate 15, slightly of Escondido, California along California SR-78. The park is primarily within the San Diego city limits,[6] with an Escondido mailing address.[3]

History[edit]

The San Diego Zoological Society became interested in developing a larger facility in 1964. The initial concept of the park was as a supplementary breeding facility for the San Diego Zoo, which would allow ample space for large animals and herding behaviors of ungulates.

The development proposed would differ significantly from that of a typical zoo in that animals would be exhibited in a naturalistic, spacious environment rather than in cages. In 1964, the park was assessed financially and then moved onto the next phase, with this resulting in three alternative developments—a conservation farm, a game preserve, or a ‘natural environment’ zoo. The natural environment zoo development was chosen over the conservation farm and game preserve even though it was the most expensive option. The estimated initial cost was $1,755,430.[7]

The main purposes of this zoo were to be species conservation, breeding of animals for the San Diego Zoo (as well as trading between zoos) and providing areas where exotic animals arriving to the state of California could be quarantined and monitored. When it came to naming the park, five titles were considered: San Diego Animal Land, San Diego Safari Land, San Diego Wild Animal Safari, or the San Diego Wildlife Park; ultimately, the name chosen was the San Diego Wild Animal Park.[7]

The scheduled opening day of the park was set for April 1, 1972; however, the gates did not open until May 10, 1972.[7] The general layout of the park, designed by Charles Faust, included a large lagoon with a jungle plaza, an African fishing village, an aviary at the entrance of the park and approximately 50,000 plants were to be included in the landscaping.[7] Although the park was scheduled to open in three years from the time of the groundbreaking, the total development of the park was estimated to take ten years.

The first two species to arrive at the park were the nilgai (an antelope from India and Nepal) and the Grant's zebra, native to East Africa.[7] Subsequent species to arrive at the park included the gemsbok, a type of oryx from Southern Africa and Namibia, in addition to Zambian sable antelope, greater kudu, southern and northern white rhinoceros subspecies (which were both in-danger of extinction), the one-horned Indian rhinoceros, as well as ten South African cheetahs, brought to the park for breeding purposes.

When the park first opened, there were many cultural shows and programs, with groups invited from Africa and Asia. There were also many animal encounters and entertainment options available for guests to view various animal ambassador species.

In the summer of 2003, the San Diego Zoological Society and Lowry Park Zoo orchestrated the capture of 11 wild African elephants from the Hlane Royal National Park in Swaziland (since 2018 renamed to Eswatini). The zoos said the animals were scheduled to be killed due to overpopulation.[8] However, In Defense of Animals disputes this, claiming that new fencing costing many times less than the capture and transport would have ended the need to remove any elephants from Swaziland, and that the Save Wild Elephants Coalition reported that there were three other sanctuaries in Africa that had offered to take the elephants.[9]

Five of these elephants are now at the San Diego Zoo Safari Park,[8] and cumulatively, they have produced thirteen babies, as of 2013.[10][11] In March 2012, five elephants were moved to the Reid Park Zoo in Tucson, Arizona, to form a new herd. A bull elephant, two cows, and two baby bulls were moved and, in return, two female elephants that had been together for years. Connie, an Asian elephant, and Shaba, an African elephant, were sent to the San Diego Zoo.[12][13] Connie died from cancer in July 2012, just five months after the move. Shaba was slowly introduced into the herd in February 2013.[14] On July 12, 2012, Ndulagave birth to Umzula. A male calf named Zuli was the largest elephant born at the park. The California wildfire season in 2007, which officially started on October 21 that year, burned 600 acres (2.4 km2) of native chaparral lands within the park and caused the park's temporarily closure. The park moved many of their endangered animals out of danger of the fire. The flames did not reach any of the main enclosures, and no animals were killed or burned by the fire, though the flames could be seen clearly from several of the exhibits. The incidental deaths of a clapper rail and kiang were attributed to indirect effects of the blaze.

On June 30, 2010, the San Diego Zoo board of trustees voted to change the name of the park from the Wild Animal Park to the San Diego Zoo Safari Park to clarify what it offers, since the difference between the zoo proper and the "animal park" was unclear to some visitors. The name "safari" is supposed to emphasize "the park's spacious enclosures of free-ranging animals" (as opposed to "the closer quarters of the zoo"), encouraging visits to both locations.[15] In July 2019, the park opened a new exhibit specifically for their rhinoceroses, the Nikhita Khan Rhino Centre (named after animal lover and lawyer Nikhita Khan), debuting as the home for six rhinos. A few days after the center's opening, one of the rhinos (named Victoria) gave birth to Edward, a male calf, becoming the first rhinoceros in North America to be born via artificial insemination.[citation needed]

The main Africa Enclosure, where many of the herbivores live free-range

Exhibits and attractions[edit]

Asian Savanna and African Plains[edit]

Rhinos in the African Plains

The park's largest exhibits, covering over 300 acres (120 ha),[16] are the open-range enclosures. Visitors view various plains habitats from Africa and Asia. Asian Savanna covers 60 acres (24 ha) and displays Indian rhinoceros, Bactrian camels, banteng, gaur and several species of Asian deer and antelope such as blackbuck, barasingha, North China sika deer, axis deer, Eld's deer, Père David's deer, nilgai, white-lipped deer, sambar deer, and Bactrian deer. A number of smaller enclosures visible only from the tram are home to Somali wild ass, Arabian oryx, markhor, Soemmerring's gazelle, and Przewalski's horses.[16] African Plains represents many regions and habitats. East Africa displays African buffalo, southern white rhinoceros, Rothschild's giraffe, reticulated giraffe, fringe-eared oryx, waterbuck, Nile lechwe, red lechwe, impala, Grant's gazelle, Thomson's gazelle, and a lagoon with East African crowned cranes, pink-backed pelicans, Dalmatian pelicans, African sacred ibises and great white pelicans.[16] The North Africa exhibit represents the Sahel and Sahara Desert that houses scimitar-horned oryx, Barbary stag, red-fronted gazelle, Barbary sheep and Ankole-Watusi cattle.[16] The Southern Africa field exhibits Grévy's zebras, waterbucks, kudus and an Ankole-Watusi. The South Africa field exhibit holds Masai giraffes, common eland, sable antelope, gemsbok, springbok, blue wildebeest and ostrich.[17] The Central Africa region features a wooded waterhole with an island for saddle-billed storks, spur-winged geese, Lappet-faced vultures, Goliath herons, Egyptian geese, and Rüppell's vultures. On the shores of the lake are bongo antelope, red river hog, greater kudu, Ugandan kob, roan antelope, and other forest animals.[17]

A replica Congo fishing village in Nairobi Village

Species of note in the open enclosures include two subspecies of giraffe, rhinos (it was the last New World zoo to have northern white rhinoceros), vultures, markhor, and many species of antelope, gazelle, and deer. However, the overall numbers of animals at the park have been greatly reduced.

Tiger Trail[edit]

The Sumatran tigers, Denver and Rakan (male), Joanne, Majel, Cathy, Debbie, and Diana, have three different exhibits, and there is a glass viewing window for visitors.[18][19] After raising $19.6 million for the new exhibit ground was broken on December 12, 2012. The new exhibit is named the Tull Family Tiger Trail after movie producer Thomas Tull and his wife.[20] Tiger Trail opened May 24, 2014. In August 2017, a Bengal tiger cub named Moka was rescued by border police from a car on the Mexican border and brought to the zoo.[21]

Tiger in San Diego Zoo Safari Park's Tiger Trail exhibit

The exhibits' matriarch, Delta, was euthanized on July 29, 2018, shortly after her birthday, due to old age. The current matriarch is her daughter, Joanne.

Nairobi Village and Gorilla Forest[edit]

Originally a center for cultural events in the park, today Nairobi Village houses numerous exhibits for smaller animals. Among these are meerkats, Rodrigues fruit bats, an African aviary, ring-tailed lemurs, Chilean flamingos, pudú, Kirk's dik-diks, yellow-backed duikers, red river hogs, West African crowned cranes, South American coatis, and white-fronted bee-eaters.[22] A large lagoon is home to numerous species of waterfowl, both foreign and native. Lorikeet Landing and Hidden Jungle display feedable lories and lorikeets, and African birds, respectively. There is a nursery where visitors can watch baby animals being hand-reared as well as a nearby petting corral.[22] Finally, a habitat houses a troop of western lowland gorillas. In 2014, Imami gave birth to Joanne despite a respiratory problem. She and Joanne were treated for 11 days.

In 2019 medical experts collaborated to do cataract surgery on a three-year-old gorilla, Leslie. This was the park's first cataract surgery on a gorilla.[23]

In January 2021, two gorillas were reported to be the first known cases of COVID-19 transmission from humans to apes during the coronavirus pandemic. The gorillas recovered from the virus.[24]

Hidden Jungle[edit]

Located in Nairobi Village, this climate-controlled indoor exhibit opened in 1993[25] and displays tropical African birds and insects.[26] The entrance to the building is a simulated earthen crevasse with displays for stick insects, spiders, scorpions, insects, millipedes, lizards, and snakes.[25] The underground segment opens up to a room representing the rainforest understory, which leads to a second room representing the canopy. On display are long-tailed paradise whydah, purple grenadier, red-crested turaco, African pygmy goose, beautiful sunbird and other birds.[26]

A pair of African lions rest on an overcast day.

Hidden Jungle is the setting of the annual Butterfly Jungle event.[26]

Lion Camp[edit]

Opened in October 2004, Lion Camp houses the park's six African lions, Izu, Mina, Oshana and Etosha in a 1-acre (0.40 ha) exhibit.[27] The park's two other lions, Ernest and Miss Ellen, were moved to the San Diego Zoo. One side of the enclosure is dominated by an artificial rock kopje which has a 40-foot-long (12 m) glass viewing window and heated rocks.[27] The path continues along an acacia-studded ravine and leads to a replica observation tent. This has a smaller viewing window as well as a Land Rover for the lions to rest on.

A California condor perches on the giant rock in its aviary.

Condor Ridge[edit]

Condor Ridge displays endangered North American desert wildlife.[28] The featured species are California condors[28] (the Wild Animal Park was the key force in the recovery effort for these birds and this is one of the only places in the world where the public can see them in captivity) and desert bighorn sheep.[28] Other species displayed include Aplomado falcons, San Clemente loggerhead shrikes, thick-billed parrots, ocelots, bald eagles, Harris's hawks, squirrels, burrowing owls, prairie dogs, black footed ferrets, magpies, and desert tortoises.[28]

African Woods and African Outpost[edit]

Formerly known as Heart of Africa, these are two of the park's major exhibits. Visitors go down a trail which replicates habitats in Africa. The exhibit begins in African Woods with scrub animals - vultures, lesser kudu, and giant eland. It then progresses to the forest (okapi, red-flanked duikers, gerenuk, steenbok, demoiselle cranes, kori bustard, and wattled cranes). The path then leads to African Outpost, which features plains animals - bontebok, warthogs, bat-eared foxes, secretary birds, yellow-billed storks, ground hornbills, cheetahs, and nyala - against a backdrop of the open-range East Africa exhibit. A central lagoon has lesser and greater flamingos, waterfowl, an island with colobus monkeys, and an interpretive research camp on a separate island.

Tours and rides[edit]

The park formerly operated a monorail line, the Wgasa Bush Line, which ran clockwise through the Wild Animal Park. The name of the monorail was originally chosen by chief designer Chuck Faust as a profane inside joke, with "WGASA" being an acronym for "who gives a shit anyway". Zoo officials later came up with a backronym for the name, saying that it stood for "World’s Greatest Animal Show Anywhere".[29]

The Monorail line has been retired, partially due to high maintenance costs, and in March 2007 the Journey into Africa attraction, now renamed Africa Tram, opened. The Africa Tram tour runs counterclockwise and brings visitors to the field exhibits to see wildlife from different parts of Africa. In addition, another route is planned to bring visitors through the Asian field exhibits and into eight new ones that will house a variety of African animals from rock hyrax to Hartmann's mountain zebras. The tour uses a wheeled tram that runs on biofuel instead of a monorail.

As well as the tram, the park has also added a tethered balloon ride that allows visitors to see the plains exhibits from 400 feet (120 m) (~21 giraffes) in the air.[30] The balloon ride is not included in the entrance fee.

Gardens[edit]

The park also has extensive botanical gardens, many of which are their own attractions separate from the animal exhibits.

Walkabout Australia[edit]

Walkabout Australia is the park's only Australia exhibit.[31] It is 3.6 acres and guests can go inside an exhibit which features western grey kangaroos, red-necked wallabies, Australian brushturkeys, radjah shelducks, freckled ducks and magpie geese. Walkabout Australia also has two southern cassowary exhibits, a Matschie's tree-kangaroo exhibit and an animal ambassador area where guests can meet the safari park's Australian animal ambassadors. Walkabout Australia also has a restaurant and a devil's marbles area. It is also home to two platypuses, Birrarung and Eve.[32] The exhibit opened in 2018.[33][34][35]

Conservation[edit]

The safari park was a major factor in the recovery of the California condor. Beginning in 1980, it worked with the U.S. Fish and Wildlife Service and the Los Angeles Zoo to start a captive breeding program.[36] The last 22 condors were taken into captivity in 1987[36] To breed the condors quickly, the Safari Park would remove the eggs from the nests to induce the females to lay a second egg.[36][37] The removed egg hatches in an incubator and is raised with a condor handpuppet to prevent human imprinting, while the second egg is raised by its parents. The first condor born through this process is Siscouc, a male condor, who was the patriarch of the flock (last chick, Kitwon). Now that title goes to Siwon.[36][37] Captive-bred condors were reintroduced into the wild beginning in 1992, and today their population 500, with 200 in the wild as of November 2020.[36]

On December 14, 2014, Angalifu, a 44-year-old male northern white rhinoceros, died of old age at the park. This left only five northern white rhinos left in the world, including one female at the Safari Park.[38] On November 22, 2015, the park's last northern white rhino, 41-year-old Nola, was euthanized due to bacterial infection and her health rapidly failing.

In June 2019, two young male African elephants named Ingadze and Lutsandvo were sent to Alabama's Birmingham Zoo as part of the Association of Zoos and Aquariums' Species Survival Plan.[39] On 28 July 2019, the zoo announced the birth of Edward, a male Southern White Rhinoceros, the first rhino in North America born through artificial insemination, born to Victoria and Maoto. The second rhino born through artificial insemination, Future, a female southern White rhinoceros, was also born in the park. On August 12, 2018, the zoo announced the birth of Zuli, a male elephant born to Ndula, the largest calf born at the zoo, of 299 pounds. The record was broken six weeks later by Kaia, a female elephant born to Umngani, at 320 pounds.

Awards[edit]

The Safari Park has received several awards for its breeding programs and conservation efforts.

Year Awarding body Award Notes
1972 American Association of Zoological Parks and Aquariums (AAZPA) Edward H. Bean Award For hatching of Abyssinian ground hornbill[40]
1974 AAZPA Edward H. Bean Award For hatching of Abyssinian ground hornbill[40][41]
1989 AAZPA Edward H. Bean Award For California condor breeding (shared with San Diego Zoo and Los Angeles Zoo)[40][41]
1994 Association of Zoos and Aquariums (AZA) Significant Achievement Award For hornbill breeding program[40]
2007 Avian Scientific Advisory Group (ASAG) Plume Award for Noteworthy Achievement in Avian Husbandry For the Light-footed Clapper Rail coalition [shared with Chula Vista Nature Center, SeaWorld San Diego, San Diego Zoo, and United States Fish and Wildlife Service (USFWS) Reserve][42]
2011 USFWS Endangered Species Recovery Champion Award (Pacific Southwest Region) Awarded to Michael Mace, Curator of Birds, for work with California condors and light-footed clapper rails[40]

Notes[edit]

  1. ^ "San Diego Zoo Safari Park".
  2. ^ "Hours and Directions | San Diego Zoo Safari Park". Archived from the original on March 17, 2015. Retrieved April 4, 2015.
  3. ^ a b "Summer Safari". Archived from the original on March 4, 2016. Retrieved April 4, 2015.
  4. ^ a b c d "About the San Diego Zoo". sandiegozoo.org. San Diego Zoo. Archived from the original on December 6, 2010. Retrieved June 6, 2012.
  5. ^ "Currently Accredited Zoos and Aquariums". aza.org. AZA. Retrieved May 28, 2014.
  6. ^ "San Pasqual Valley Plan" (PDF). City of San Diego Planning Department. p. 29. Archived (PDF) from the original on October 9, 2022. Retrieved February 6, 2012. Most commercial activity in the San Pasqual Valley is related to tourism, education or recreation. These uses include ... the San Diego Wild Animal Park operated by the zoological society on 1,800 acres of land leased from the City
  7. ^ a b c d e Article: San Diego Wild Animal Park, by Sandy Harriger; http://history.sandiego.edu/GEN/USPics/zoo/wildanimalpark3.html
  8. ^ a b Shroder, Susan. "African elephant born at San Diego Wild Animal Park". sandiegouniontribune.com. Retrieved November 5, 2018.
  9. ^ "Zoos' False Claims". Archived from the original on August 15, 2004. Retrieved March 12, 2015.
  10. ^ "Travel - Los Angeles Times". Los Angeles Times. Retrieved November 5, 2018.
  11. ^ "Meet the Herd". San Diego Zoological Association. Archived from the original on 4 April 2013. Retrieved 20 March 2013.
  12. ^ "Welcome elephants Connie and Shaba". blogs.sandiegozoo.org. Archived from the original on 2 October 2013. Retrieved 20 March 2013.
  13. ^ Lori Weisberg (March 2, 2012). "Elephant pals at home in SD Zoo". The San Diego Union-Tribune. Retrieved June 22, 2018.
  14. ^ "Elephant Shaba meets the girls". blogs.sandiegozoo.org. Retrieved March 20, 2013.
  15. ^ Brennan, Deborah Sullivan (12 July 2010). "Wild Animal Park to switch to 'Safari Park'". North County Times. Archived from the original on 15 July 2010. Retrieved 13 July 2010.
  16. ^ a b c d "Wild Animal Park Exhibit: Asia and Africa Field Exhibits". sandiegozoo.org. Zoological Society of San Diego. Archived from the original on August 24, 2006.
  17. ^ a b "Wild Animal Park Exhibit: Journey into Africa Tour". sandiegozoo.org. Zoological Society of San Diego. Archived from the original on August 24, 2007.
  18. ^ "Tiger Trail at the San Diego Zoo Safari Park". www.sdzsafaripark.org. Retrieved November 5, 2018.
  19. ^ "Tigers at the Park: Please Help Build Their New Home". sandiegozoo.org. Zoological Society of San Diego. December 30, 2011.
  20. ^ "San Diego Safari Park breaks ground on 5 acre tiger habitat". kpbs.org. December 12, 2012. Retrieved March 20, 2013.
  21. ^ "Zoo takes custody of tiger cub seized at border crossing". WBFF. August 25, 2017. Retrieved January 14, 2021.
  22. ^ a b "Wild Animal Park: Nairobi Village". sandiegozoo.org. Zoological Society of San Diego. August 12, 2006. Archived from the original on August 12, 2006.
  23. ^ "Experts Come Together to Save 3-year-old Gorilla's Eyesight at San Diego Zoo Safari Park". ucsdnews.ucsd.edu. Retrieved January 14, 2021.
  24. ^ Gibbons, Ann (January 12, 2021). "Captive gorillas test positive for coronavirus". Science | AAAS. Retrieved January 14, 2021.
  25. ^ a b "Wild Animal Park Exhibits: Hidden Jungle". sandiegozoo.org. Zoological Society of San Diego. Archived from the original on August 11, 2006.
  26. ^ a b c "San Diego Zoo Safari Park: Hidden Jungle". sandiegozoo.org. Zoological Society of San Diego. Archived from the original on December 31, 2011.
  27. ^ a b "Wild Animal Park: Lion Camp". sandiegozoo.org. San Diego Zoological Society. Archived from the original on February 7, 2005.
  28. ^ a b c d "Condor Ridge at the Wild Animal Park Exhibit Description". sandiegozoo.org. Zoological Society of San Diego. Archived from the original on March 6, 2005.
  29. ^ Randy Dotinga, "Fact Check: Wild Animal Park’s Naughty Line", Voice of San Diego, July 21, 2010.
  30. ^ "San Diego Zoo Safari Park: Activities". sandiegozoo.org. San Diego Zoological Society. Retrieved October 12, 2011.
  31. ^ Bradley J. Fikes (May 23, 2018). "Kangaroos, kookaburras and echidnas, oh my! Walkabout Australia opens at San Diego Zoo Safari Park". The San Diego Union-Tribune. Retrieved June 17, 2018.
  32. ^ Saunders, Mark (November 22, 2019). "San Diego Zoo Safari Park's new platypuses are only ones living outside Australia". KGTV.
  33. ^ KUSI Newsroom (May 18, 2018). "San Diego Zoo Safari Park to open new Walkabout Australia exhibit". McKinnon Broadcasting.
  34. ^ Gardner, Terry (May 24, 2018). "Cuckoo for kangaroos? They'll be hopping at San Diego Zoo Safari Park's new Walkabout Australia". Los Angeles Times.
  35. ^ Huard, Christine (October 6, 2020). "Safari Park Honored with Top Award for Walkabout Australia Design". Times of San Diego.
  36. ^ a b c d e "California Condor Recovery". azgfd.gov. Arizona Game and Fish Department. Archived from the original on April 29, 2011.
  37. ^ a b "SDZ Global Wildlife Conservancy - Success Stories - Condors". sandiegozooglobal.org. Zoological Society of San Diego. December 30, 2011. Archived from the original on September 25, 2011.
  38. ^ "Death of Rare White Rhino Leaves 5 in the World". National Geographic. December 16, 2014. Archived from the original on December 17, 2014. Retrieved December 18, 2014.
  39. ^ "Birmingham Zoo Welcomes 2 New Male African Elephants from San Diego Zoo Safari Park". June 28, 2019.
  40. ^ a b c d e "SDZG History Timeline". San Diego Zoo Global. Retrieved May 27, 2015.
  41. ^ a b "Edward H. Bean Award". aza.org. Association of Zoos and Aquariums. Archived from the original on June 22, 2015. Retrieved June 1, 2015.
  42. ^ "Past Plume Awards Recipients". aviansag.org. Avian Scientific Advisory Group. Retrieved June 21, 2015.

Further reading[edit]

External links[edit]