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ostrich : a swift-footed 2-toed flightless ratite bird (Struthio camelus) of Africa that is the largest of existing birds and often weighs 300 pounds (140 kilograms) — Merriam-Webster   See also   OneLook


Ostriches are a family, Struthionidae, of flightless birds. Ostriches first appeared during the Miocene epoch, though various Paleocene, Eocene and Oligocene fossils may also belong to the family. Ostriches are classified in the ratite group of birds, all extant species of which are flightless, including the kiwis, emus, and rheas. Traditionally the order Struthioniformes contained all the ratites. However, recent genetic analysis has found that the group is not monophyletic, as it is paraphyletic with respect to the tinamous, so the ostriches are classified as the only members of the order. There are two extant species of ostrich, the common ostrich and Somali ostrich, both in the genus Struthio, which also contains several species known from Holocene fossils such as the Asian ostrich. The common ostrich is the largest living bird species, and other ostriches are among the largest bird species ever. — Wikipedia

Ostrich (Encyclopædia Britannica)

Ostrich (One Zoom)
Ostrich (WolframAlpha)




Ornithology is a branch of zoology that concerns the methodological study and consequent knowledge of birds with all that relates to them. A wide range of tools and techniques are used in ornithology, both inside the laboratory and out in the field. Most biologists who consider themselves to be “Ornithologists” study specific categories, such as Anatomy, Taxonomy, or Ecology lifestyles and behaviors. — Wikipedia

Ornithology (Encyclopædia Britannica)

Introduction to Ornithology (Environmental Science)




DDC: 598.52 Ostriches (Library Thing)
Subject: Ostriches (Library Thing)

Subject: Ostriches (Open Library)

LCC: QL 696.C34 Ostriches (UPenn Online Books)
Subject: Ostriches (UPenn Online Books)

LCC: QL 696.C34 Ostriches (Library of Congress)
Subject: Ostriches (Library of Congress)

Subject: Ostriches (WorldCat)




MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources



What is an Ornithologist? (Environmental Science)

Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)


Ornithological Council
American Ornithological Society
National Audubon Society


Ornithology (American Ornithological Society)
Audubon Magazine (National Audubon Society)

Ostriches (EurekaAlert, American Association for the Advancement of Science)
Ostriches (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Ostriches (JSTOR)
Ostriches (Science Daily)
Ostriches (Science News)
Ostriches (Phys.org)
Ostriches (NPR Archives)



Ostrich (USA.gov)


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