翱翔著的黑美洲鷲(4K視頻）
Black Vultures Soaring (4K Video)
1/14/2025
Video camera：Nikon P1000
2張照片也是NikonP1000拍的，這是當時還在樹上的一隻，用的鏡頭是相當於135毫米膠片標準的3000毫米的焦段。
From eepseek:
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黑美洲鷲（學名：Coragyps atratus）
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這是最準確的直譯名稱，強調其分類（美洲鷲科）和體色特征。
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黑頭美洲鷲
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因其頭部呈灰黑色且主要分布於美洲，此名稱也較常用。
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簡稱/通用名：黑鷲
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非正式場合下的簡化稱呼。
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補充說明：
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黑美洲鷲主要分布於美洲地區，從美國東南部到南美洲均有分布。
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與歐亞大陸的“禿鷲”（vulture）不同，屬於新大陸鷲科。
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特征：全身深黑色，頭部無羽毛呈灰黑色，翅尖有淺色斑紋。
From Gemini:
Based on the flight behavior and visual characteristics from the video and your earlier description, these birds are Black Vultures (Coragyps atratus).
The flight style you described—flying like an eagle—is a primary indicator for this species. Below are the specific clues that confirm they are Black Vultures rather than Turkey Vultures:
1. Flight Pattern and Wing Shape
"Eagle-like" Flight: Black Vultures hold their wings perfectly flat and horizontal when soaring, very similar to an eagle's silhouette.
Rapid Flapping: Unlike the steady, effortless glide of a Turkey Vulture, Black Vultures use a "flap-flap-glide" rhythm with short bursts of rapid, powerful wingbeats.
Stability: They are much more stable in the air. Turkey Vultures have a characteristic "teetering" or wobbly flight, rocking back and forth in the wind while holding their wings in a "V" shape.
2. Wing and Tail Appearance White Wing Tips: In flight, look for silvery-white patches located only at the very tips of the wings (the "fingers").
Short, Square Tail: Their tails are notably short and squared-off, often appearing stubby in flight. A Turkey Vulture’s tail is longer and more slender.
3. Social Behavior Roosting in Groups: Finding five of them together on a high branch is very common for this species. Black Vultures are highly social and often gather in communal roosts to wait for the morning air to warm up before taking flight.
Family Bonds: They often stay in close contact with family members and forage together in groups, which helps them defend food sources from solitary Turkey Vultures.
gemini says:
Yes, based on the close-up image of the head and the flight behavior you described, the naming is correct. This is a Black Vulture (Coragyps atratus).
The details in your photo confirm this identification through several specific physical traits:
1. Head Color and Texture
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Dark Gray/Black Skin: The bird has the characteristic bare, dark-gray to black skin on its head.
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Wrinkled Appearance: You can clearly see the heavily folded and wrinkled skin on the head and throat, which is a key feature of the Black Vulture.
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Comparison: An adult Turkey Vulture would have a bright red head. While a juvenile Turkey Vulture has a dark head, it lacks the extreme wrinkling seen in your photo and usually has a different bill color.
2. Bill Characteristics
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Dark Bill with Light Tip: The bill is dark (blackish) with a noticeably lighter, bone-colored tip.
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Turkey Vulture Difference: An adult Turkey Vulture has a starkly white or ivory-colored bill.
3. Body and Social Clues
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Black Plumage: The feathers are a uniform, sooty black.
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The Group of Five: As mentioned earlier, finding a group of five together strongly supports the Black Vulture identification, as they are much more social than the typically solitary Turkey Vulture.
4. Why You Saw "Eagle-like" Flight
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Flat Wings: Your observation of it flying like an eagle is the best "behavioral" proof. Black Vultures hold their wings perfectly flat when they soar, just like eagles. Turkey Vultures, by contrast, hold their wings in a "V" shape and wobble unsteadily in the wind.
https://www.youtube.com/watch?v=yIdNrY17uZ0
