Marvin Philip Kahl (September 28, 1934 – December 4, 2012) was an American
zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological clas ...
who studied
birds
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweigh ...
and
elephants
Elephants are the largest existing land animals. Three living species are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. They are the only surviving members of the family Elephantidae and ...
. From the 1950s to 1980s, Kahl conducted his avian research on
storks
Storks are large, long-legged, long-necked wading birds with long, stout bills. They belong to the family called Ciconiidae, and make up the order Ciconiiformes . Ciconiiformes previously included a number of other families, such as herons an ...
,
flamingos
Flamingos or flamingoes are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas (including the Caribbean) ...
and
spoonbills
Spoonbills are a genus, ''Platalea'', of large, long-legged wading birds. The spoonbills have a global distribution, being found on every continent except Antarctica. The genus name ''Platalea'' derives from Ancient Greek and means "broad", re ...
. During this time period, Kahl worked for various places including the
National Audubon Society
The National Audubon Society (Audubon; ) is an American non-profit environmental organization dedicated to conservation of birds and their habitats. Located in the United States and incorporated in 1905, Audubon is one of the oldest of such organ ...
and
Rare Animal Relief Effort. In the 1990s, Kahl switched his research to elephants and continued to study them until the 2010s.
Throughout his career, Kahl took wildlife photographs for various publications including ''
National Geographic
''National Geographic'' (formerly the ''National Geographic Magazine'', sometimes branded as NAT GEO) is a popular American monthly magazine published by National Geographic Partners. Known for its photojournalism, it is one of the most widely ...
'' and the ''
Journal of Zoology
The ''Journal of Zoology'' is a scientific journal concerning zoology, the study of animals. It was founded in 1830 by the Zoological Society of London and is published by Wiley-Blackwell. It carries original research papers, which are targeted t ...
.'' Kahl wrote ''Wonders of Storks'' in 1978 and was a co-author of ''Storks, Ibises, and Spoonbills of the World'' in 1992. Apart from his works, Kahl received a fellowship from the
National Science Foundation
The National Science Foundation (NSF) is an independent agency of the United States government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National I ...
in the 1960s and one from the
American Museum of Natural History
The American Museum of Natural History (abbreviated as AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. In Theodore Roosevelt Park, across the street from Central Park, the museum complex comprises 26 inter ...
in the 1970s. He also became part of the
MacArthur Fellows Program
The MacArthur Fellows Program, also known as the MacArthur Fellowship and commonly but unofficially known as the "Genius Grant", is a prize awarded annually by the John D. and Catherine T. MacArthur Foundation typically to between 20 and 30 ind ...
in 1988.
Early life and education
Kahl was born in
Indianapolis, Indiana
Indianapolis (), colloquially known as Indy, is the state capital and most populous city of the U.S. state of Indiana and the seat of Marion County. According to the U.S. Census Bureau, the consolidated population of Indianapolis and Mari ...
on September 28, 1934. Growing up, Kahl enjoyed learning about nature when he was a child and began
birdwatching
Birdwatching, or birding, is the observing of birds, either as a recreational activity or as a form of citizen science. A birdwatcher may observe by using their naked eye, by using a visual enhancement device like binoculars or a telescope, b ...
while in high school.
For his post-secondary education, Kahl studied botany and zoology at
Butler University
Butler University is a private university in Indianapolis, Indiana. Founded in 1855 and named after founder Ovid Butler, the university has over 60 major academic fields of study in six colleges: the Lacy School of Business, College of Communic ...
and received a
Bachelor of Science
A Bachelor of Science (BS, BSc, SB, or ScB; from the Latin ') is a bachelor's degree awarded for programs that generally last three to five years.
The first university to admit a student to the degree of Bachelor of Science was the University of ...
in 1956.
After Butler, Kahl went to
Emory University
Emory University is a private research university in Atlanta, Georgia. Founded in 1836 as "Emory College" by the Methodist Episcopal Church and named in honor of Methodist bishop John Emory, Emory is the second-oldest private institution of ...
for a biology program while serving for the
United States Army
The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...
.
[ As part of the Army, he conducted research on how radioactivity impacted nature in ]Oak Ridge, Tennessee
Oak Ridge is a city in Anderson and Roane counties in the eastern part of the U.S. state of Tennessee, about west of downtown Knoxville. Oak Ridge's population was 31,402 at the 2020 census. It is part of the Knoxville Metropolitan Area. Oak ...
and Puerto Rico
Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and Unincorporated ...
.[ While studying psychology and zoology at the ]University of Georgia
, mottoeng = "To teach, to serve, and to inquire into the nature of things.""To serve" was later added to the motto without changing the seal; the Latin motto directly translates as "To teach and to inquire into the nature of things."
, establ ...
, Kahl received a Master of Science
A Master of Science ( la, Magisterii Scientiae; abbreviated MS, M.S., MSc, M.Sc., SM, S.M., ScM or Sc.M.) is a master's degree in the field of science awarded by universities in many countries or a person holding such a degree. In contrast to ...
and Doctor of Philosophy
A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common Academic degree, degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields ...
during the 1960s.
Career
In 1959, Kahl started a five-year position working for the National Audubon Society
The National Audubon Society (Audubon; ) is an American non-profit environmental organization dedicated to conservation of birds and their habitats. Located in the United States and incorporated in 1905, Audubon is one of the oldest of such organ ...
as a biologist.[ While with the NAS, Kahl conducted research on wood storks in the ]Corkscrew Swamp Sanctuary
Corkscrew Swamp Sanctuary is a National Audubon Society sanctuary located in southwest Florida, north of Naples, Florida and east of Bonita Springs, in the United States. The sanctuary was established to protect one of the largest remaining stand ...
. During the remainder of the 1960s, Kahl worked for the Makerere University College
Makerere University, Kampala (; Mak) is Uganda's largest and oldest institution of higher learning, first established as a technical school in 1922. It became an independent national university in 1970. Today, Makerere University is composed of n ...
in Uganda
}), is a landlocked country in East Africa
East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territor ...
for two years before continuing his avian research outside of the college.[ During this time period, Kahl studied ]storks
Storks are large, long-legged, long-necked wading birds with long, stout bills. They belong to the family called Ciconiidae, and make up the order Ciconiiformes . Ciconiiformes previously included a number of other families, such as herons an ...
with a fellowship from the National Science Foundation
The National Science Foundation (NSF) is an independent agency of the United States government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National I ...
and a grant from ''National Geographic
''National Geographic'' (formerly the ''National Geographic Magazine'', sometimes branded as NAT GEO) is a popular American monthly magazine published by National Geographic Partners. Known for its photojournalism, it is one of the most widely ...
''.
After expanding his research to flamingos
Flamingos or flamingoes are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas (including the Caribbean) ...
in 1964, Kahl completed his global research of every type of stork by 1970.[ During the early 1970s, Kahl worked for the ]American Museum of Natural History
The American Museum of Natural History (abbreviated as AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. In Theodore Roosevelt Park, across the street from Central Park, the museum complex comprises 26 inter ...
as a fellow before continuing his flamingo studies with an additional grant from ''National Geographic'' in 1972.[ From 1974 to 1977, Kahl was a member of the Rare Animal Relief Effort as a researcher. While branching out to research on ]spoonbills
Spoonbills are a genus, ''Platalea'', of large, long-legged wading birds. The spoonbills have a global distribution, being found on every continent except Antarctica. The genus name ''Platalea'' derives from Ancient Greek and means "broad", re ...
in 1979, Kahl finished his worldwide research on every type of flamingo in 1980.[
From 1980 to 1989, Kahl traveled across the world to research every spoonbill breed.][Hill 2014, p. 784] During this time period, Kahl was named into the MacArthur Fellows Program
The MacArthur Fellows Program, also known as the MacArthur Fellowship and commonly but unofficially known as the "Genius Grant", is a prize awarded annually by the John D. and Catherine T. MacArthur Foundation typically to between 20 and 30 ind ...
in 1988. With his MacArthur prize money, Kahl wanted to conduct research on the black-faced spoonbill
The black-faced spoonbill (''Platalea minor'') is a species of wading bird in the ibis and spoonbill family Threskiornithidae, found in eastern Asia. This species has the most restricted distribution of the six spoonbill species, and it is the ...
in North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and shares borders with China and Russia to the north, at the Yalu River, Y ...
. After he was not allowed to enter the country, Kahl went to China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
to continue his spoonbill research.[
At the start of the 1990s, Kahl switched his research topic from birds to the non-verbal behavior of ]elephants
Elephants are the largest existing land animals. Three living species are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. They are the only surviving members of the family Elephantidae and ...
.[ With a focus on African elephants, Kahl went to ]Zimbabwe
Zimbabwe (), officially the Republic of Zimbabwe, is a landlocked country located in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Botswana to the south-west, Zambia to the north, and Mozam ...
and conducted research at Hwange National Park
Hwange National Park (formerly Wankie Game Reserve) is the largest natural reserve in Zimbabwe. It is around 14,600 sq km in area. It lies in the northwest of the country, just off the main road between Bulawayo and Victoria Falls. The neares ...
throughout the 1990s. After completing his primary research, Kahl continued to review his findings until the 2010s.[Hill 2014, p. 785] Apart from his research, Kahl wrote and took photographs about wildlife for various publications including the ''Journal of Zoology
The ''Journal of Zoology'' is a scientific journal concerning zoology, the study of animals. It was founded in 1830 by the Zoological Society of London and is published by Wiley-Blackwell. It carries original research papers, which are targeted t ...
'', ''National Geographic'' and ''Behaviour
Behavior (American English) or behaviour (British English) is the range of actions and mannerisms made by individuals, organisms, systems or artificial entities in some environment. These systems can include other systems or organisms as wel ...
''.[ Some birds that Kahl photographed included the ]Salvadori's teal
Salvadori's teal (''Salvadorina waigiuensis'') or Salvadori's duck, is a species of bird endemic to New Guinea. It is placed in the monotypic genus ''Salvadorina''.
It has a dark brown head and neck, and its body is barred and spotted dark brown ...
and the sunbittern
The sunbittern (''Eurypyga helias'') is a bittern-like bird of tropical regions of the Americas, and the sole member of the family Eurypygidae (sometimes spelled Eurypigidae) and genus ''Eurypyga''. It is found in Central and South America, and ...
.[
]
Research and publications
After raising wood storks during the early 1960s, Kahl published ''Bioenergetics of Growth in Nestlings Wood Storks'' in 1962. In 1963, Kahl published his research of how storks lowered their body temperature with urohidrosis
Urohidrosis (sometimes misspelled "urohydrosis") is the habit in some birds of defecating onto the scaly portions of the legs as a cooling mechanism, using evaporative cooling of the fluids. Several species of storks and New World vultures exhibi ...
. That year, Kahl conducted an experiment with L. J. Peacock to determine how storks catch fish. To conduct the test, the researchers covered a wood stork's eyes with ping-pong balls that were darkened to reduce the bird's vision. After their research was concluded, Kahl and Peacock published their findings about the independent workings of the bird's feeding and sight. As an author, Kahl wrote and drew a 1978 children's book titled ''Wonders of Storks''. As a co-writer, he was part of the 1992 publication of ''Storks, Ibises, and Spoonbills of the World''.[
]
Death and personal life
Kahl died from a brain tumor
A brain tumor occurs when abnormal cells form within the brain. There are two main types of tumors: malignant tumors and benign (non-cancerous) tumors. These can be further classified as primary tumors, which start within the brain, and seconda ...
on December 4, 2012 in Sedona, Arizona
Sedona is a city that straddles the county line between Coconino and Yavapai counties in the northern Verde Valley region of the U.S. state of Arizona. As of the 2010 census, its population was 10,031. It is within the Coconino National Fo ...
. He was married twice and had two children.[Hill 2014, pp. 782, 785]
References
{{DEFAULTSORT:Kahl, M. Philip
1934 births
2012 deaths
American zoologists
People associated with the American Museum of Natural History
National Geographic photographers
Nature photographers
MacArthur Fellows
Deaths from brain tumor