File:BirdBeaksA.svg · Wikimedia Commons · See Wikimedia Commons
จะงอยปาก
Sign in to saveAlso known as bill, rostrum, bird beak, bird bill
thumb|Comparison of bird beaks, displaying different shapes adapted to different feeding methods; not to scale The beak or bill is an external rostrum structure found mostly in birds. A beak is used for pecking, grasping, and holding (in probing for food, eating, manipulating and carrying objects, killing prey, or fighting), preening, courtship, and feeding young. The terms beak and rostrum are also used to refer to a similar mouth part in some ornithischians, pterosaurs, cetaceans, dicynodonts, rhynchosaurs, anuran tadpoles, monotremes (i.e. echidnas and platypuses, which have a bill-like str
A beak is a hard, external mouth structure found primarily in birds, used for eating, grasping objects, fighting, preening, and caring for young. Similar beak-like structures also appear in some other animals including pterosaurs, cetaceans, and monotremes, and the variety of beak shapes across species reflects adaptations to different feeding methods.
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Research
3,505 papers- The "double beak sign" on CT.ReviewAbdominal radiology (New York) · 2021Metcalfe AM, DiSantis DJ, Alexander LFDOI: 10.1007/s00261-020-02814-x
- Molecular Innovations Shaping Beak Morphology in Birds.ReviewAnnual review of animal biosciences · 2025Cheng Y, Miller MJ, Lei FDOI: 10.1146/annurev-animal-030424-074906
- Beak morphometry and morphogenesis across avian radiations.Proceedings. Biological sciences · 2023Mosleh S, Choi GPT, Musser GM et al.DOI: 10.1098/rspb.2023.0420
- Cellular, Molecular, and Genetic Mechanisms of Avian Beak Development and Evolution.ReviewAnnual review of genetics · 2024Schneider RADOI: 10.1146/annurev-genet-111523-101929
- From snout to beak: the loss of teeth in birds.ReviewTrends in ecology & evolution · 2011Louchart A, Viriot LDOI: 10.1016/j.tree.2011.09.004
- Orbital impalement by ballyhoo fish beak.Orbit (Amsterdam, Netherlands) · 2022Patton AM, Turbin RE, Mirani N et al.DOI: 10.1080/01676830.2021.1872092
- Psittacine beak and feather disease in 2 free-living great green macaws: a case report and literature review.ReviewJournal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2025Olivares RWI, Bass LG, Sáenz-Bräutigam A et al.DOI: 10.1177/10406387251333410
- Development, structure, and protein composition of the corneous beak in turtles.ReviewAnatomical record (Hoboken, N.J. : 2007) · 2021Alibardi LDOI: 10.1002/ar.24604
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