這是藍孔雀。該物種的雄性擁有一串非凡的尾羽，在地面上形成沉重而細長的剪影，並在求偶展示時展開成引人注目的扇形。這是公雞。這種農場標誌性動物的剪影特徵包括頭頂肉質的雞冠、喙下的肉垂，以及由飄逸羽毛組成的大型弧狀尾部。這是火烈鳥。這種鳥類以其奇異彎曲的喙和單腳站立在極細長腿上的習慣而聞名，形成了在水禽中獨一無二的頭重腳輕的剪影。這是紅喉北蜂鳥。這種鳥細小而精緻，其剪影特徵是看起來模糊的翅膀，以及完美適應深入管狀花朵吸食花蜜的針狀長喙。這是托哥巨嘴鳥。這個剪影最顯著的特徵是超大且呈船形的喙，儘管外觀巨大，但由於其內部的中空結構，重量卻驚人地輕。這是原鴿。這是一種非常熟悉的都市剪影，有著小頭、豐滿的胸部和短喙，經常被看見在城市人行道上邊走邊點頭。這是疣鼻天鵝。這種大型水禽展現出莊嚴的剪影，擁有優雅彎曲的長頸和低伏於水面的龐大身軀，當兩隻天鵝面對面時，常會形成心形。這是一隻白頭海鵰。作為一種令人敬畏的頂級掠食者，其輪廓特徵為飛行時平展的板狀寬大翅膀，以及一個專為撕裂魚類而設計的巨大、深鉤狀鳥喙。這是一隻烏鴉。純黑色的輪廓，擁有強壯厚實的鳥喙和方形尾巴，常被看見棲息在電線上或在田野中覓食。這是一隻皇帝企鵝。由於缺乏錐形飛行翼，這種鳥的影子呈直立狀且無法飛行，展現出粗壯的魚雷型身體和用於游泳的短槳狀鰭足。這是一隻鴕鳥。地球上最大的鳥類，其輪廓特徵為長而無毛的脖子、巨大的圓形身體，以及能夠達到驚人奔跑速度的粗壯有力雙腿。這是一隻大雕鴞。這種夜間獵手的識別特徵是其笨重且方正的頭部，以及打破輪廓的顯著「耳簇」或角，此外還有粗壯的脖子和強有力的爪子。這是一隻倉鴞。這種鳥擁有獨特的「心形」面盤，定義了其輪廓，與其他貓頭鷹相比，它還擁有長腿和幽靈般纖細的身體。這是一隻禿鷲。在飛行中，這種鳥的輪廓可透過具有「手指狀」翼尖的寬大翅膀和一個與龐大身軀相比顯得微小的無毛頭部來識別。這是一隻雪鴞。這種鳥呈現出非常圓潤且笨重的輪廓，沒有可見的耳簇，厚實的羽毛層使其棲息在地面時看起來像一個白色的球體。這是一隻緋紅金剛鸚鵡。這種熱帶鳥類的輪廓特徵是擁有非常長且尖的尾巴和厚重彎曲的鳥喙，常被看到成對飛越熱帶雨林冠層。這是一隻普通樓燕。其輪廓像新月或拉開的弓，這種鳥擁有極長的鐮刀狀翅膀和短尾巴，使其幾乎一生都在空中度過。這是一隻走鵑。這是一種具有獨特外形的沙漠專家：長而直並保持一定角度的尾巴、頭上蓬鬆的冠羽，以及為了高速衝刺而設計的水平身體姿勢。這是一隻大藍鷺。這種鳥以其雕像般的捕獵姿勢著稱，具有明顯的 S 型曲線脖子和細長的長腿，適合在淺水濕地中涉水，並用匕首般的鳥喙伏擊魚類。這是一隻褐鵜鶘。這種鳥極易辨認，擁有巨大的鳥喙和可用於撈魚的可膨脹喉囊，常被看見笨重地棲息在海岸碼頭或頭朝下潛入大海。這是一隻啄木鳥。這種鳥的輪廓常被看見垂直附著在樹幹上，由充當三腳架的僵硬尖尾巴和鑿子般的喙支撐。這是一隻漂泊信天翁。牠擁有現存鳥類中最大的翼展，其影子的特徵是極其細長的翅膀，讓牠能在公海上方滑翔數小時。這是一隻翠鳥。這是一種體型緊湊、短尾的鳥，擁有不成比例的大頭和匕首般的鳥喙，常被看見靜止地棲息在懸掛於水面的樹枝上。這是一隻綠頭鴨。這是經典的鴨子輪廓，具有扁平的喙、粗壯的身體和短腿，常被看見漂浮在池塘上或將尾巴翹在空中「戲水」。這是一隻北極海鸚。牠通常被稱為「海上小丑」，其輪廓顯示出圓胖的身體和巨大的三角形鳥喙，當牠棲息在懸崖上時，看起來頭部非常沉重。這是一隻戴勝。這種鳥具有極易辨認的輪廓，特徵是長而細的彎曲鳥喙，以及可以像皇冠一樣展開的壯觀羽冠。這是一隻野生火雞。這是一種大型、體型沉重的鳥，頭部細小且無羽毛，在展示時會展開巨大的扇形尾巴。這是一隻金絲雀。這是一種小型、精緻的鳴禽輪廓，擁有用於啄食種子的短圓錐形喙和苗條的身體，常被看見棲息在籠子或小灌木叢中。這是一隻琵鷺。顧名思義，這種涉禽的輪廓由其長而平的鳥喙定義，喙的末端擴張成完美的湯勺形狀。這是一隻鳳頭鸚鵡。這是一種大型鸚鵡，其影子顯示出強健的身體和頭部非常顯著的前彎羽冠，激動時會豎起。這是一隻海鷗。這是一種常見的海岸輪廓，擁有長而尖的翅膀和末端帶有小鉤的堅固鳥喙，常被看見在空中翱翔或站在海灘碼頭上。這是一隻鴯鶓。這是一種來自澳洲的大型走禽，具有粗糙如頭髮般的羽毛輪廓、長脖子和非常有力的三趾足。這是一隻家燕。它是空中特技大師，其剪影因其深叉狀的「燕尾」和長而尖的翅膀而極易辨認。這是一隻加拿大雁。這是一種大型水禽剪影，擁有黑色的長脖子和笨重的身體，常被看見以完美的「V」字形編隊在天空中飛行。這是一隻北美紅雀。這這種常見的後院鳥類擁有非常經典的剪影，其獨特之處在於其突出的尖頭冠和粗壯的圓錐形喙。這是一隻冠藍鴉。其剪影大膽，頭上有明顯的冠羽，尾巴長而圓，常被看見在郊區的樹林中不停地穿梭。這是一隻笑翠鳥。這是一種標誌性的澳洲鳥類，身體結實，頭大，擁有非常堅固且厚實的喙，用於捕獵。這是一隻白鸛。這是一種大型涉禽，擁有長而直的喙和非常長的腿，常被看見在煙囪或電線桿頂部建造巨大的樹枝巢穴。這是一種獨特的非洲猛禽，其剪影看起來像是鷹和鶴的混合體，擁有極其修長的腿，腦後長有一排像羽毛筆一樣突出的戲劇性冠羽。這是一隻旅鶇。其剪影是經典的鳴禽形象，胸部豐滿，喙直且長度適中，常被看見在草坪上跳躍尋找蚯蚓。You scored 0 out of 40You scored 1 out of 40You scored 2 out of 40You scored 3 out of 40You scored 4 out of 40You scored 5 out of 40You scored 6 out of 40You scored 7 out of 40You scored 8 out of 40You scored 9 out of 40You scored 10 out of 40You scored 11 out of 40You scored 12 out of 40You scored 13 out of 40You scored 14 out of 40You scored 15 out of 40You scored 16 out of 40You scored 17 out of 40You scored 18 out of 40You scored 19 out of 40You scored 20 out of 40You scored 21 out of 40You scored 22 out of 40You scored 23 out of 40You scored 24 out of 40You scored 25 out of 40You scored 26 out of 40You scored 27 out of 40You scored 28 out of 40You scored 29 out of 40You scored 30 out of 40You scored 31 out of 40You scored 32 out of 40You scored 33 out of 40You scored 34 out of 40You scored 35 out of 40You scored 36 out of 40You scored 37 out of 40You scored 38 out of 40You scored 39 out of 40You scored 40 out of 40
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你是否曾凝視黃昏的天空，捕捉到轉瞬即逝的剪影，只能透過在微光中顯現的鋒利邊緣來辨認？除了鮮豔的羽毛和悠揚的歌聲，鳥類的真正本質在於其結構形態，那是經過數百萬年進化雕琢而成的「飛行名片」。本次測驗邀請你進入一個極簡的黑白世界，在這裡色彩消失，只剩下純粹的幾何圖形。我們測試的不僅僅是你的鳥類學知識，更是在挑戰你與自然設計的直覺聯繫。從猛禽的鉤狀喙到涉禽的高蹺腿，你能否僅憑陰影揭開這些空中靈魂的面紗？