*  Antediluvian Salad: Lips Before Beaks Part I: Why Grow A Beak?
... the drastic differences between bird and crocodile facial structures is because the existing crocodile-esque sensory structures ... However the anatomical feature that precipitated this transition in theropods is lips. The question is what did these lips look ... For some more thought and reference on beaked, half beaked, beaks and teeth in stem-birds go read Matt Martyniuk's post ... As I will argue embedded in the question of why grow a beak? is what type of lip was there before the beak?. Why grow a beak? ...
  http://antediluviansalad.blogspot.com.es/2017/02/lips-before-beaks-part-i-why-grow-beak.html
*  Beak (disambiguation) - Wikipedia
A beak is an anatomical structure of birds, which serves as the mouth and jaws. Beak may also refer to: Beak, a type of molding ... a Marvel Comics character formerly known as Beak Beak, a Beanie Buddy kiwi bird Beak (botany), a pointed projection on various ... for other anatomical structures of animals commonly known as a beak Derived from Mr. Beke, a former English magistrate: cf ... an old-fashioned slang term for the headmaster of a school or a magistrate Beak, slang term for the drug cocaine Beak (band), a ...
  https://en.wikipedia.org/wiki/Beak_(disambiguation)
*  Bird anatomy - Wikipedia
Beak[edit]. Main article: Beak. The beak, bill, or rostrum is an external anatomical structure of birds which is used for ... Birds also lack teeth or even a true jaw, instead having a beak, which is far more lightweight. The beaks of many baby birds ... Bird anatomy, or the physiological structure of birds' bodies, shows many unique adaptations, mostly aiding flight. Birds have ... See also: Bird vision and Avian pallium. Birds have acute eyesight-raptors (birds of prey) have vision eight times sharper than ...
  https://en.wikipedia.org/wiki/Avian_reproductive_system
*  Beak - Wikipedia
The beak, bill, or rostrum is an external anatomical structure of birds that is used for eating and for preening, manipulating ... Birds may bite or stab with their beaks to defend themselves.[103] Some species use their beaks in displays of various sorts. ... The jaw muscles, which allow the bird to close its beak, attach to the proximal end of the lower mandible and to the bird's ... Beak trimming[edit]. Main article: Debeaking. Because the beak is a sensitive organ with many sensory receptors, beak trimming ...
  https://en.wikipedia.org/wiki/Bird
*  Beak - Wikipedia
The beak, bill, or rostrum is an external anatomical structure of birds that is used for eating and for preening, manipulating ... Play media Birds may bite or stab with their beaks to defend themselves. Some species use their beaks in displays of various ... Beak coloration helps to make displays using those beaks more obvious. Birds are capable of seeing colors in the ultraviolet ... The jaw muscles, which allow the bird to close its beak, attach to the proximal end of the lower mandible and to the bird's ...
  https://en.wikipedia.org/wiki/Beak
*  Bird anatomy - Wikipedia
The beak, bill, or rostrum is an external anatomical structure of birds which is used for eating and for grooming, manipulating ... Birds also lack teeth or even a true jaw, instead having a beak, which is far more lightweight. The beaks of many baby birds ... Bird anatomy, or the physiological structure of birds' bodies, shows many unique adaptations, mostly aiding flight. Birds have ... top beak), and the mandible (bottom beak). The skull of a normal bird usually weighs about 1% of the bird's total body weight. ...
  https://en.wikipedia.org/wiki/Bird_anatomy
*  Glossary of bird terms - Wikipedia
beak Also bill or rostrum. An external anatomical structure of a bird's head, roughly corresponding with the "nose" of a mammal ... the terms beak and bill are generally considered to be synonymous. beak colour The colour of a bird's beak results from ... while the term bird banding is more often used in the U.S. and Australia. bird strike The impact a bird or birds with an ... Very young birds are clad only in down. The loose structure of down feathers traps air, which helps to insulate the bird ...
  https://en.wikipedia.org/wiki/Glossary_of_bird_terms
*  Gular skin - Wikipedia
... to the bird's neck. Other vertebrate taxa may have a comparable anatomical structure that is referred to as either a gular sac ... Gular skin (throat skin), in ornithology, is an area of featherless skin on birds that joins the lower mandible of the beak (or ... Crop (anatomy) Air sacs Gular (disambiguation), gular anatomical formations in other species Manitoba Museum of Man and Nature ... contrasting with the otherwise plain black or black-and-white appearance of the bird. This presumably serves some function in ...
  https://en.wikipedia.org/wiki/Gular_skin
*  Adaptation | Encyclopedia.com
... wings allow birds to fly, whereas the hooked beak and sharp talons of birds of prey are more specialized adaptations well ... Animals show anatomical adaptations-e.g., the body of the fish is suited to life in the water; the body of the bird is adapted ... The complex, densely structured, darker books like Bleak House, Little Dorrit, and Our Mutual Friend have generally met with ... The beaks of birds vary in shape and size according to what they feed on-e.g., on seeds, on insects, on aquatic animals, or on ...
  https://www.encyclopedia.com/science-and-technology/biology-and-genetics/genetics-and-genetic-engineering/adaptation
*  Read or download Atlas of Creation - Volume 4
Confuciornis has no teeth, and its beak, feathers and skeletal structure have the same features as present-day birds. It also ... The fact is, however, that both anatomical comparisons between birds and reptiles and also the fossil record completely refute ... Confuciusornis sanctus, a frequently encountered beaked bird that lived 125 million years ago, had no teeth, but its beak and ... Its skeletal structure was also identical to that of present-day birds, and it had claws on its wings. The organ known as the ' ...
  http://harunyahya.com/en/books/152365/Atlas-of-Creation---Volume-4/chapter/14254/Specimens-of-terrestrial-animal-and-bird-fossils--1
*  adaptation | FactMonster
The beaks of birds vary in shape and size according to what they feed on-e.g., on seeds, on insects, on aquatic animals, or on ... Animals show anatomical adaptations-e.g., the body of the fish is suited to life in the water the body of the bird is adapted ... for flight and the land mammals show a wide variation in the structure of limbs and body that enables some to run swiftly, some ... The feet and legs of birds also show modifications that fit them for perching, for wading, or for paddling through the water. ...
  https://www.factmonster.com/encyclopedia/science-and-technology/biology-and-genetics/genetics-and-genetic-engineering/adaptation
*  Shaping Skeletal Growth by Modular Regulatory Elements in the Bmp5 Gene
Regulatory lesions are difficult to identify, and it has not yet been possible to track particular bird or fish anatomical ... An extensive 3′ regulatory region controls expression of Bmp5 in specific anatomical structures of the mouse embryo. Genetics. ... Morphoregulation of avian beaks: comparative mapping of growth zone activities and morphological evolution. Dev Dyn. 2006;235: ... The role of BMPs and GDFs in development of region-specific skeletal structures. Annals New York Acad Sci. 1996;785:70-79. [ ...
  http://pubmedcentralcanada.ca/pmcc/articles/PMC2592695/?lang=en-ca
*  Science Philosophy: Jean-Paul Sartre Biography to Seminiferous tubules - JRank Articles
A major anatomical characteristic of scorpionfish is a bony structure extending from the eye to the operculum or gill cover. ... Secretary Bird. The secretary bird (Sagittarius serpentarius) is the only member of the family Sagittariidae. This family is ... The head is rather elongated and points down in a beak-like fashion with the chewing mouthparts located at the tip of the beak ... The secretary bird is native to sub-Saharan Africa, and occurs in open grasslands and savannas. The species is wide-ranging, ...
  http://science.jrank.org/collection/816/Science-Philosophy-Jean-Paul-Sartre-Biography-Seminiferous-tubules.html
*  Adaptation (biology) | Article about Adaptation (biology) by The Free Dictionary
The beaks of birds vary in shape and size according to what they feed on-e.g., on seeds, on insects, on aquatic animals, or on ... Animals show anatomical adaptations-e.g., the body of the fish is suited to life in the water; the body of the bird is adapted ... The structure and form of the root system, the stem, the leaves, and especially the reproductive organs are characterized by a ... The feet and legs of birds also show modifications that fit them for perching, for wading, or for paddling through the water. ...
  https://encyclopedia2.thefreedictionary.com/Adaptation+
*  Exotic Pet Grooming - Stahl Exotic Animal Veterinary Services
Beak Trims - Reptiles and Birds (aesthetic and corrective). Whether it is for aesthetic reasons or directly related to a ... This is a common problem among rabbits as a result of their anatomical posture. Under normal circumstances a rabbit will lift ... a condition where the bodies weight is placed primarily on non weight-bearing structures. In addition, if unkept, nails can ... With that being said, there are many benefits to trimming a birds wings. Whether you would like to believe it or not, all birds ...
  https://www.seavs.com/exotic-pet-grooming/
*  Whale - Wikipedia
doi:10.1007/S10914-011-9184-8. Reidenberg, Joy S. (2007). "Anatomical adaptations of aquatic mammals". The Anatomical Record. ... A beaked whale for example has a small bulge sitting on top of its skull, whereas a sperm whale's head is filled up mainly with ... They have a pair of blowholes side-by-side and lack teeth; instead they have baleen plates which form a sieve-like structure in ... "Experimental investigations on the respiratory function in diving mammals and birds". Hvalraadets Skrifter. 22: 1-131. Rose, ...
  https://en.wikipedia.org/wiki/Whale
*  Browsing Evolusjon og biodiversitet by Issue Date
Of extant beaked animals, birds and turtles are the best known. In this study, an anatomical comparison between oviraptorids, ... The control region (CR) of the mitochondrial DNA has been previously used to decipher the population structure of Holocene ... Beak morphology in extant birds with implications on beak morphology in ornithomimids  ... Beak morphology in oviraptorids, based on extant birds and turtles  Jansen, Stig Olav Krekvik (Master thesis / Masteroppgave, ...
  https://www.duo.uio.no/handle/10852/28/browse?type=dateissued
*  Features that Birds Share with Reptiles
Who would have imagined the high flying bird and the sunbathing reptile to have a common ancestor? This article sheds light on ... wherein different organisms evolve similar anatomical structures on their own. However, with the discovery of feathered ... Birds have a light beak, with no teeth.. The jaws of reptiles are very heavy, with the presence of teeth. ... The nucleated blood cell structure is another shared feature.. Exception!. As birds are airborne, their bones are hollow, ...
  https://www.buzzle.com/articles/features-that-birds-share-with-reptiles.html
*  Popular Science Monthly/Volume 8/April 1876/An Interesting Bird - Wikisource, the free online library
Considered as to externals only, we find Chionis minor with the general form of a pigeon, the beak of a crow, surmounted by a ... after a careful anatomical examination, decided that its nearest affinities were with the Oyster-catchers (Hœmatopus). This ... the structure of the skeleton, particularly of the skull (Huxley) and sternum, and the variations in muscular form and ... Darwin exactly expressed the present attitude of this bird to science, as long ago as the voyage of the Beagle. He found a bird ...
  https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_8/April_1876/An_Interesting_Bird
*  Evolution of birds - Wikipedia
Although ornithischian (bird-hipped) dinosaurs share the same hip structure as birds, birds actually originated from the ... The evolutionary trend among birds has been the reduction of anatomical elements to save weight. The first element to disappear ... they retained the clawed wings and a snout with teeth rather than a beak in most forms. The loss of a long tail was followed by ... They thus arrived at their hip structure condition independently. In fact, a bird-like hip structure also developed a third ...
  https://en.wikipedia.org/wiki/Evolution_of_birds
*  Skull - Wikipedia
... bottom beak). The skull of a normal bird usually weighs about 1% of the bird's total bodyweight. The eye occupies a ... in which the individual structures may be difficult to identify. The temporal fenestrae are anatomical features of the skulls ... The skull is a bony structure that forms the head in most vertebrates. It supports the structures of the face and provides a ... Bird Skull Collection Bird skull database with very large collection of skulls (Agricultural University of Wageningen) Human ...
  https://en.wikipedia.org/wiki/Skull
*  Common ostrich - Wikipedia
... which form an arcade structure within the lung called the paleopulmo. It is the only structure found in primitive birds such as ... Inhalation begins at the mouth and the nostrils located at the front of the beak. The air then flows through the anatomical ... The common ostrich's sternum is flat, lacking the keel to which wing muscles attach in flying birds.[16] The beak is flat and ... The common ostrich is the largest living species of bird and lays the largest eggs of any living bird (extinct elephant birds ...
  https://en.wikipedia.org/wiki/Struthio_camelus
*  Edmontosaurus - Wikipedia
... furrows and ridges are more like those of herbivorous turtle beaks than the flexible structures seen in filter-feeding birds. ... Because the tooth rows are deeply indented from the outside of the jaws, and because of other anatomical details, it is ... The beak was toothless, and both the upper and lower beaks were extended by keratinous material. Substantial remains of the ... and a pubis in front that flared into a plate-like structure. The structure of the hip hindered the animal from standing with ...
  https://en.wikipedia.org/wiki/Edmontosaurus
*  The Cerebrum | Boundless Anatomy and Physiology
The rostrum is so named for its resemblance to a bird's beak. ... Structure. The Basal Ganglia: The basal nuclei are often ... Brain lobes were originally a purely anatomical classification, but we now know they are also associated with specific brain ... A phylogenetically old structure consisting of the following structures:. *Parahippocampal gyrus: Plays a role in the formation ... Hippocampus and Associated Structures. *Hippocampus: Required for the formation of long-term memories and implicated in ...
  https://courses.lumenlearning.com/boundless-ap/chapter/the-cerebrum/
*  Ornithischia - Wikipedia
... "bird-like" hip and beak-like predentary structure though they shared other features as well. The ornithischian pelvis is " ... birds are unrelated, instead being theropod dinosaurs. Ornithischians with well known anatomical adaptations include the ... is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure similar to that of birds. The name ... This results in a four-pronged pelvic structure. In contrast to this, the saurischian pelvis is "propubic", meaning the pubis ...
  https://en.wikipedia.org/wiki/Ornithischia