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About: Bird vision
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endpoint"><i class="bi-box-arrow-up-right"></i> Sparql Endpoint </a> </li> </ul> </div> </div> </nav> <div style="margin-bottom: 60px"></div> <!-- /navbar --> <!-- page-header --> <section> <div class="container-xl"> <div class="row"> <div class="col"> <h1 id="title" class="display-6"><b>About:</b> <a href="http://dbpedia.org/resource/Bird_vision">Bird vision</a> </h1> </div> </div> <div class="row"> <div class="col"> <div class="text-muted"> <span class="text-nowrap">An Entity of Type: <a href="http://dbpedia.org/class/yago/Bird101503061">Bird101503061</a>, </span> <span class="text-nowrap">from Named Graph: <a href="http://dbpedia.org">http://dbpedia.org</a>, </span> <span class="text-nowrap">within Data Space: <a href="http://dbpedia.org">dbpedia.org</a></span> </div> </div> </div> <div class="row pt-2"> <div class="col-xs-9 col-sm-10"> <p class="lead">Vision is the most important sense for birds, since good eyesight is essential for safe flight. Birds have a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings". Birds are theropod dinosaurs, and the avian eye resembles that of other reptiles, with ciliary muscles that can change the shape of the lens rapidly and to a greater extent than in the mammals. Birds have the largest eyes relative to their size in the animal kingdom, and movement is consequently limited within the eye's bony socket. In addition to the two eyelids usually found in vertebrates, bird's eyes are protected by a third transparent movable membrane. The eye's internal anatomy is similar to that of other vertebrates, but has a stru</p> </div> <div class="col-xs-3 col-sm-2"> <a href="#" class="thumbnail"> <img src="http://commons.wikimedia.org/wiki/Special:FilePath/Bald_Eagle_at_The_National_Zoo.jpg?width=300" alt="thumbnail" class="img-fluid" /> </a> </div> </div> </div> </section> <!-- page-header --> <!-- property-table --> <section> <div class="container-xl"> <div class="row"> <div class="table-responsive"> <table class="table table-hover table-sm table-light"> <thead> <tr> <th class="col-xs-3 ">Property</th> <th class="col-xs-9 px-3">Value</th> </tr> </thead> <tbody> <tr class="odd"><td class="col-2"><a class="uri" href="http://dbpedia.org/ontology/abstract"><small>dbo:</small>abstract</a> </td><td class="col-10 text-break"><ul> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="ar" >الرؤية هي أهم الحواس بالنسبة للطيور، فالرؤية الجيدة ضرورية للطيران الآمن، وقد حصلت الطيور على هذا البصر الحاد الذي تتفوق به على المجموعات الفقارية الأخرى من خلال عدة عمليات تكيف مرت بها. يوصف الحمام بأنه «عينان مع أجنحة». تتشابه عين الطيور مع عين الزواحف بالعضلات الهدبية التي يمكن أن تغير شكل العدسة بسرعة أكبر من الثدييات. تمتلك الطيور أكبر عيون بالنسبة لحجمها في مملكة الحيوان، وبالتالي فإن الحركة محدودة داخل تجويف عظم العين. وبالإضافة إلى الجفنين اللذين يوجدان عادة لدى الفقاريات، فعيونهم محمية بواسطة غشاء متحرك شفاف إضافي. مع أن تشريح العين الداخلي مشابه لتشريح عين الفقاريات الأخرى، لكن بنية ممشط الصلبة فريد من نوعه لدى الطيور. بعض مجموعات الطيور لديها تعديلات محددة على نظامها البصري وهذا بسبب طريقة حياتها. فالطيور الجارحة لديها كثافة عالية جدًا من المستقبلات والتكيفات الأخرى التي تزيد من حدة البصر. إضافة إلى أن تموضع عيونهم يعطيهم رؤية عينية جيدة تسمح لهم بحكم دقيق على المسافات. أما الفصائل الليلية فلديها عيون أنبوبية وعدد قليل من حساسات اللون، ولكنها تمتلك كثافة عالية من العصي التي تعمل بشكل جيد في الضوء الضعيف. طيور الخرشنة والنوارس والقطرس هي من بين الطيور البحرية التي تمتلك قطرات زيت حمراء أو صفراء في مستقبلات الألوان لتحسين الرؤية عن بعد، وخاصة في الحالات الضبابية.</span><small> (ar)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="ca" >La visió és el sentit més important per a les aus, ja que una bona visió és essencial per la seguretat del vol. Aquest grup animal té diverses adaptacions que donen una agudesa visual superior a la d'altres grups vertebrats. Per exemple, un colom ha estat descrit com "dos ulls amb ales". L'ull dels ocells s'assembla als dels rèptils, amb músculs ciliars que poden canviar la forma del cristal·li ràpidament i en major mesura que en els mamífers. Les aus tenen els ulls més grossos de tot el regne animal en relació amb el seu volum, i el moviment és, doncs, limitat dins la presa òssia de l'ull. A més de les dues parpelles que es solen trobar en els vertebrats, està protegit per una tercera membrana mòbil transparent anomenada membrana nictitant. L'anatomia interna de l'ull és similar a la d'altres vertebrats però té una estructura, el pecten oculi, única en els ocells. Alguns grups d'ocells tenen modificacions específiques del sistema visual relacionades amb la forma de vida. Les aus rapinyaires tenen una densitat molt alta de receptors i altres adaptacions que maximitzen l'agudesa visual. La col·locació dels seus ulls els proporciona una bona visió binocular que permet un mesurament exacte de les distàncies. Les espècies nocturnes tenen ulls tubulars amb un baix nombre de detectors de color però una alta densitat de bastonets de la retina que funcionen bé amb poca llum. Els estèrnids, les gavines i els albatros es troben entre les aus marines que presenten vermell o groc en els receptors del color per millorar la visió a distància, especialment en condicions de broma atmosfèrica.</span><small> (ca)</small></span></li> <li><span class="literal"><span property="dbo:abstract" lang="en" >Vision is the most important sense for birds, since good eyesight is essential for safe flight. Birds have a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings". Birds are theropod dinosaurs, and the avian eye resembles that of other reptiles, with ciliary muscles that can change the shape of the lens rapidly and to a greater extent than in the mammals. Birds have the largest eyes relative to their size in the animal kingdom, and movement is consequently limited within the eye's bony socket. In addition to the two eyelids usually found in vertebrates, bird's eyes are protected by a third transparent movable membrane. The eye's internal anatomy is similar to that of other vertebrates, but has a structure, the pecten oculi, unique to birds. Some bird groups have specific modifications to their visual system linked to their way of life. Birds of prey have a very high density of receptors and other adaptations that maximise visual acuity. The placement of their eyes gives them good binocular vision enabling accurate judgement of distances. Nocturnal species have tubular eyes, low numbers of colour detectors, but a high density of rod cells which function well in poor light. Terns, gulls, and albatrosses are among the seabirds that have red or yellow oil droplets in the colour receptors to improve distance vision especially in hazy conditions.</span><small> (en)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="es" >La visión es el más importante de los sentidos de las aves, dado que es esencial para un vuelo seguro, y este grupo tiene un número de adaptaciones que permiten una agudeza visual superior a la de otros grupos de vertebrados. Para resaltar esto, por ejemplo, se ha descrito a la paloma como "dos ojos con alas". El ojo de las aves se parece al de los reptiles actuales, pero tiene un mejor posicionamiento de los lentes, una característica compartida con los mamíferos. Las aves tienen los ojos más grandes en relación con el tamaño corporal entre todo el reino animal, y el movimiento dentro de la cavidad ósea ocular es limitado por esa causa. Adicionalmente a los dos párpados que siempre se encuentran en otros vertebrados, el ojo es protegido por una tercera membrana, móvil y transparente. La anatomía interna del ojo es similar a la de otros vertebrados, pero tiene una estructura, el pecten, única de las aves. Las aves, como los peces, anfibios y reptiles, tienen cuatro tipos de receptores de color en el ojo. La mayoría de los mamíferos tienen dos tipos, aunque los primates tienen tres. Esto les da a las aves la habilidad de percibir no solo la luz en el espectro visible, sino también en el ultravioleta, y otras adaptaciones permiten la detección de luz polarizada. Las aves tienen proporcionalmente más receptores de luz en la retina que los mamíferos, y más conexiones nerviosas entre los fotorreceptores y el cerebro. Algunos grupos de aves tienen modificaciones específicas para su sistema visual ligadas a sus modos de vida. Las aves de presa tienen una alta densidad de receptores y otras adaptaciones para maximizar la agudeza visual. La posición de sus ojos les dan buena visión binocular permitiéndoles una adecuada apreciación de las distancias. Las especies nocturnas tienen ojos tubulares, con poco número de detectores de color, pero una alta densidad de células bastoncillos, las que detectan mejor la luz menos intensa. Los charranes, gaviotas y albatros están entre las aves marinas que tienen gotas de aceite rojas y amarillas en los receptores de color para mejorar la visión a distancia, especialmente en condiciones brumosas.</span><small> (es)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="fr" >La vision des oiseaux est l'une des visions les plus performantes du monde animal. La vue est, avec l'ouïe, le sens le plus important de ces espèces, qu'elles soient diurnes ou nocturnes. Tous les oiseaux ne bénéficient pas des mêmes qualités de vue. Cependant, la plupart des espèces ont une vue comparable à celle des primates, qui possèdent pourtant la meilleure vision parmi les mammifères. La structure de leur œil est semblable à celle des mammifères cependant, elle est tétrachromatique pour la plupart des oiseaux alors qu'elle n'est que trichromatique pour les primates. En général, l'œil est plus grand, proportionnellement, que celui des mammifères, la densité de cellules nerveuses est plus importante ce qui permet une acuité visuelle plus fine, la vision est souvent plus panoramique et surtout plus rapide. Le cerveau et le cervelet des oiseaux sont assez développés pour traiter ces informations. De plus certaines espèces disposent de plusieurs types de paupières.</span><small> (fr)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="in" >Penglihatan adalah indra yang paling penting untuk burung, karena penglihatan yang baik bersifat sangat menentukan bagi penerbangan yang aman, dan kelompok burung memiliki sejumlah adaptasi yang memberikan keunggulan visual dari kelompok vertebrata lainnya; merpati dideskripsikan sebagai "dua mata dengan sayap". Mata burung mirip dengan mata reptil, memiliki otot siliaris yang dapat mengubah bentuk lensa mata secara lebih cepat dan lebih luas daripada mata mamalia. Burung memiliki mata yang relatif lebih besar jika dibandingkan dengan hewan lain dalam kingdom animalia dengan ukuran tubuh yang sama besar, dan sebagai akibat dari matanya yang besar tersebut, gerakannya terbatasi oleh tulang rongga mata. Di samping mempunyai dua kelopak mata sebagaimana biasa ditemukan pada vertebrata, mata burung juga dilindungi oleh membran ketiga yang transparan dan dapat digerak-gerakkan. Anatomi internal mata burung sama dengan vertebrata lain, namun memiliki struktur tambahan yang hanya ada pada burung, yakni pekten okuli. Penglihatan burung, tidak sebagaimana pada manusia, namun serupa dengan ikan, amfibia, dan reptil, mempunyai empat jenis reseptor warna. Hal ini membuat kemampuan mata burung untuk menangkap bukan hanya kisaran cahaya tampak, tetapi juga rentang sinar ultraungu dari spektrum cahaya, serta adaptasi lain yang memungkinkan burung untuk mendeteksi cahaya terpolarisasi atau medan magnet. Secara proposional, burung memiliki lebih banyak reseptor cahaya di retinanya daripada mamalia, dan lebih banyak koneksi saraf antara reseptor cahaya dan otak. Beberapa jenis burung memiliki modifikasi khusus pada sistem visual mereka terkait dengan cara hidup masing-masing. Burung pemangsa memiliki reseptor cahaya dengan kepadatan yang sangat tinggi dan adaptasi lain yang memaksimalkan ketajaman visualnya. Posisi kedua mata burung pemangsa adalah sedemikian rupa, sehingga membuat penglihatan binokular mereka yang baik dan memungkinkan burung untuk memperhitungkan jarak secara akurat. Sementara burung-burung malam (nokturnal) mempunyai mata yang berbentuk tabung, dengan sedikit detektor warna, tetapi memiliki sel batang dengan kepadatan tinggi yang sangat berguna saat cahaya sedikit. Dara laut, camar, dan albatros adalah sebagian dari jenis burung laut yang memiliki tetesan minyak merah atau kuning pada reseptor warna di matanya, untuk memperbaiki penglihatan jarak jauh terutama pada kondisi berkabut.</span><small> (in)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="pt" >A visão das aves constitui um dos sentidos mais importantes e desenvolvidos desses animais, sendo essencial para sua sobrevivência, atuando em atividades como o voo, forrageamento, fuga e reprodução. Em 1943, o oftalmologista e biólogo francês André Rochon-Duvigneaud caracterizou as aves como “uma asa guiada por um olho”. A classe das Aves está presente em uma grande variedade de habitats como terra, água e ar, os quais refletem em adaptações e variabilidade no design ótico. Essas adaptações estão relacionadas com o modo de vida desses organismos e permitiram que alguns grupos de aves tenham um aumento significativo da acuidade visual, quando comparados com os demais vertebrados, podendo enxergar de 2 a 8 vezes mais que um mamífero.</span><small> (pt)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="sv" >Fåglarnas synsinne är välutvecklat och jämfört med däggdjuren har de proportionellt sett en betydligt större ögonglob, oftast bättre synskärpa och ett mer utvecklat färgseende. Synen hos de flesta fåglar omfattar ett brett färgspektrum som sträcker sig från kortvågigt ultraviolett ljus till långvågigt rött ljus. Deras skarpa syn beror på en rad faktorer. De har en hög täthet av fotoreceptorer på näthinnan, ett stort antal synnerver, en extra uppsättning muskler för ögonen, som inte förekommer hos några andra djur, och i vissa fall, en konkav fovea som förstorar den centrala delen av synfältet. Många arter har även två foveor i varje öga. Precis som reptiler så saknar de blodkärl i näthinnan. Detta skiljer dem från däggdjuren och är ytterligare en orsak till deras skarpa syn. Näthinnan får istället näring och syre genom en specifik struktur som kallas pekten. Fåglar fuktar och skyddar sina ögon med blinkhinnan som till skillnad från yttre ögonlock rör sig horisontellt över ögat. Fåglars ögon har även en förmåga att uppfatta såväl polariserat ljus som jordens magnetfält. Sitt välutvecklade synsinne utnyttjar de för att söka föda, navigera, välja partner och upptäcka rovdjur.</span><small> (sv)</small></span></li> <li style="display:none;"><span class="literal"><span property="dbo:abstract" lang="ru" >Зрение является наиболее важным чувством для птиц, поскольку хорошее зрение необходимо для безопасного полёта. В отличие от других позвоночных среди них отсутствуют виды с редуцированными глазами. У птиц имеется ряд приспособлений, обеспечивающих более высокую остроту зрения по сравнению с другими группами позвоночных; голубей даже называют «крылатыми глазами». Птичий глаз напоминает глаз рептилии, он обладает развитой цилиарной мышцей, способной изменять форму хрусталика быстрее и сильнее, чем у млекопитающих. По внутреннему строению они схожи с глазами других позвоночных, но имеют уникальную структуру — гребень. В животном царстве у птиц самые большие глаза относительно размера тела. Движение глаз ограничено склеротическим кольцом. В дополнение к двум векам, обычно имеющимся у позвоночных животных, глаза птиц защищены третьей прозрачной подвижной мембраной. Некоторые группы птиц обладают особыми модификациями зрительной системы, связанными с их образом жизни. У хищных птиц большая плотность зрительных рецепторов в сетчатке повышает остроту зрения. Расположение глаз обеспечивает им хорошее бинокулярное зрение, позволяющее точно оценивать расстояние. У птиц, ведущих ночной образ жизни, трубчатые глаза с небольшим количеством цветовых зрительных рецепторов, но с многочисленными палочками, которые хорошо функционируют при слабом освещении. Крачки, чайки и альбатросы принадлежат к числу птиц, у которых в цветовых рецепторах имеются красные или жёлтые , улучшающие зрение вдаль, особенно в условиях тумана.</span><small> (ru)</small></span></li> </ul></td></tr><tr class="even"><td class="col-2"><a class="uri" href="http://dbpedia.org/ontology/thumbnail"><small>dbo:</small>thumbnail</a> </td><td class="col-10 text-break"><ul> <li><span class="literal"><a class="uri" rel="dbo:thumbnail" resource="http://commons.wikimedia.org/wiki/Special:FilePath/Bald_Eagle_at_The_National_Zoo.jpg?width=300" href="http://commons.wikimedia.org/wiki/Special:FilePath/Bald_Eagle_at_The_National_Zoo.jpg?width=300"><small>wiki-commons</small>:Special:FilePath/Bald_Eagle_at_The_National_Zoo.jpg?width=300</a></span></li> </ul></td></tr><tr class="odd"><td class="col-2"><a class="uri" href="http://dbpedia.org/ontology/wikiPageExternalLink"><small>dbo:</small>wikiPageExternalLink</a> </td><td class="col-10 text-break"><ul> <li><span class="literal"><a 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href="http://dbpedia.org/class/yago/Whole100003553"><small>yago</small>:Whole100003553</a></span></li> </ul></td></tr><tr class="odd"><td class="col-2"><a class="uri" href="http://www.w3.org/2000/01/rdf-schema#comment"><small>rdfs:</small>comment</a> </td><td class="col-10 text-break"><ul> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="ar" >الرؤية هي أهم الحواس بالنسبة للطيور، فالرؤية الجيدة ضرورية للطيران الآمن، وقد حصلت الطيور على هذا البصر الحاد الذي تتفوق به على المجموعات الفقارية الأخرى من خلال عدة عمليات تكيف مرت بها. يوصف الحمام بأنه «عينان مع أجنحة». تتشابه عين الطيور مع عين الزواحف بالعضلات الهدبية التي يمكن أن تغير شكل العدسة بسرعة أكبر من الثدييات. تمتلك الطيور أكبر عيون بالنسبة لحجمها في مملكة الحيوان، وبالتالي فإن الحركة محدودة داخل تجويف عظم العين. وبالإضافة إلى الجفنين اللذين يوجدان عادة لدى الفقاريات، فعيونهم محمية بواسطة غشاء متحرك شفاف إضافي. مع أن تشريح العين الداخلي مشابه لتشريح عين الفقاريات الأخرى، لكن بنية ممشط الصلبة فريد من نوعه لدى الطيور.</span><small> (ar)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="ca" >La visió és el sentit més important per a les aus, ja que una bona visió és essencial per la seguretat del vol. Aquest grup animal té diverses adaptacions que donen una agudesa visual superior a la d'altres grups vertebrats. Per exemple, un colom ha estat descrit com "dos ulls amb ales". L'ull dels ocells s'assembla als dels rèptils, amb músculs ciliars que poden canviar la forma del cristal·li ràpidament i en major mesura que en els mamífers. Les aus tenen els ulls més grossos de tot el regne animal en relació amb el seu volum, i el moviment és, doncs, limitat dins la presa òssia de l'ull. A més de les dues parpelles que es solen trobar en els vertebrats, està protegit per una tercera membrana mòbil transparent anomenada membrana nictitant.</span><small> (ca)</small></span></li> <li><span class="literal"><span property="rdfs:comment" lang="en" >Vision is the most important sense for birds, since good eyesight is essential for safe flight. Birds have a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings". Birds are theropod dinosaurs, and the avian eye resembles that of other reptiles, with ciliary muscles that can change the shape of the lens rapidly and to a greater extent than in the mammals. Birds have the largest eyes relative to their size in the animal kingdom, and movement is consequently limited within the eye's bony socket. In addition to the two eyelids usually found in vertebrates, bird's eyes are protected by a third transparent movable membrane. The eye's internal anatomy is similar to that of other vertebrates, but has a stru</span><small> (en)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="es" >La visión es el más importante de los sentidos de las aves, dado que es esencial para un vuelo seguro, y este grupo tiene un número de adaptaciones que permiten una agudeza visual superior a la de otros grupos de vertebrados. Para resaltar esto, por ejemplo, se ha descrito a la paloma como "dos ojos con alas". El ojo de las aves se parece al de los reptiles actuales, pero tiene un mejor posicionamiento de los lentes, una característica compartida con los mamíferos. Las aves tienen los ojos más grandes en relación con el tamaño corporal entre todo el reino animal, y el movimiento dentro de la cavidad ósea ocular es limitado por esa causa. Adicionalmente a los dos párpados que siempre se encuentran en otros vertebrados, el ojo es protegido por una tercera membrana, móvil y transparente. La</span><small> (es)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="fr" >La vision des oiseaux est l'une des visions les plus performantes du monde animal. La vue est, avec l'ouïe, le sens le plus important de ces espèces, qu'elles soient diurnes ou nocturnes. Tous les oiseaux ne bénéficient pas des mêmes qualités de vue. Cependant, la plupart des espèces ont une vue comparable à celle des primates, qui possèdent pourtant la meilleure vision parmi les mammifères. La structure de leur œil est semblable à celle des mammifères cependant, elle est tétrachromatique pour la plupart des oiseaux alors qu'elle n'est que trichromatique pour les primates. En général, l'œil est plus grand, proportionnellement, que celui des mammifères, la densité de cellules nerveuses est plus importante ce qui permet une acuité visuelle plus fine, la vision est souvent plus panoramique et</span><small> (fr)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="in" >Penglihatan adalah indra yang paling penting untuk burung, karena penglihatan yang baik bersifat sangat menentukan bagi penerbangan yang aman, dan kelompok burung memiliki sejumlah adaptasi yang memberikan keunggulan visual dari kelompok vertebrata lainnya; merpati dideskripsikan sebagai "dua mata dengan sayap". Mata burung mirip dengan mata reptil, memiliki otot siliaris yang dapat mengubah bentuk lensa mata secara lebih cepat dan lebih luas daripada mata mamalia. Burung memiliki mata yang relatif lebih besar jika dibandingkan dengan hewan lain dalam kingdom animalia dengan ukuran tubuh yang sama besar, dan sebagai akibat dari matanya yang besar tersebut, gerakannya terbatasi oleh tulang rongga mata. Di samping mempunyai dua kelopak mata sebagaimana biasa ditemukan pada vertebrata, mata b</span><small> (in)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="ru" >Зрение является наиболее важным чувством для птиц, поскольку хорошее зрение необходимо для безопасного полёта. В отличие от других позвоночных среди них отсутствуют виды с редуцированными глазами. У птиц имеется ряд приспособлений, обеспечивающих более высокую остроту зрения по сравнению с другими группами позвоночных; голубей даже называют «крылатыми глазами». Птичий глаз напоминает глаз рептилии, он обладает развитой цилиарной мышцей, способной изменять форму хрусталика быстрее и сильнее, чем у млекопитающих. По внутреннему строению они схожи с глазами других позвоночных, но имеют уникальную структуру — гребень. В животном царстве у птиц самые большие глаза относительно размера тела. Движение глаз ограничено склеротическим кольцом. В дополнение к двум векам, обычно имеющимся у позвоночны</span><small> (ru)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="pt" >A visão das aves constitui um dos sentidos mais importantes e desenvolvidos desses animais, sendo essencial para sua sobrevivência, atuando em atividades como o voo, forrageamento, fuga e reprodução. Em 1943, o oftalmologista e biólogo francês André Rochon-Duvigneaud caracterizou as aves como “uma asa guiada por um olho”.</span><small> (pt)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:comment" lang="sv" >Fåglarnas synsinne är välutvecklat och jämfört med däggdjuren har de proportionellt sett en betydligt större ögonglob, oftast bättre synskärpa och ett mer utvecklat färgseende. Synen hos de flesta fåglar omfattar ett brett färgspektrum som sträcker sig från kortvågigt ultraviolett ljus till långvågigt rött ljus. Deras skarpa syn beror på en rad faktorer. De har en hög täthet av fotoreceptorer på näthinnan, ett stort antal synnerver, en extra uppsättning muskler för ögonen, som inte förekommer hos några andra djur, och i vissa fall, en konkav fovea som förstorar den centrala delen av synfältet. Många arter har även två foveor i varje öga. Precis som reptiler så saknar de blodkärl i näthinnan. Detta skiljer dem från däggdjuren och är ytterligare en orsak till deras skarpa syn. Näthinnan får </span><small> (sv)</small></span></li> </ul></td></tr><tr class="even"><td class="col-2"><a class="uri" href="http://www.w3.org/2000/01/rdf-schema#label"><small>rdfs:</small>label</a> </td><td class="col-10 text-break"><ul> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="ar" >رؤية الطيور</span><small> (ar)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="ca" >Visió dels ocells</span><small> (ca)</small></span></li> <li><span class="literal"><span property="rdfs:label" lang="en" >Bird vision</span><small> (en)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="es" >Visión de las aves</span><small> (es)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="fr" >Vision des oiseaux</span><small> (fr)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="in" >Penglihatan burung</span><small> (in)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="pt" >Visão das aves</span><small> (pt)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="sv" >Fåglars syn</span><small> (sv)</small></span></li> <li style="display:none;"><span class="literal"><span property="rdfs:label" lang="ru" >Зрение птиц</span><small> (ru)</small></span></li> </ul></td></tr><tr class="odd"><td class="col-2"><a class="uri" href="http://www.w3.org/2002/07/owl#sameAs"><small>owl:</small>sameAs</a> </td><td class="col-10 text-break"><ul> <li><span class="literal"><a class="uri" rel="owl:sameAs" resource="http://rdf.freebase.com/ns/m.04f5xt6" href="http://rdf.freebase.com/ns/m.04f5xt6"><small>freebase</small>:Bird vision</a></span></li> <li><span class="literal"><a class="uri" rel="owl:sameAs" 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