Mexican Jay
探検鳥類
Mexican Jay
aphelocoma wollweberi
The Mexican Jay is a highly social, intelligent songbird native to the oak-pine woodlands of the southwestern United States and Mexico. Unlike many other jays, Mexican Jays live in complex, stable family groups of up to 25 individuals. These flocks defend year-round territories and practice cooperative breeding, where non-breeding helpers assist in raising the nestlings of dominant pairs. This collaborative behavior creates fascinating, highly vocal community dynamics that make them a delight for birdwatchers to observe.
生息地: Found primarily in montane pine-oak woodlands, canyon bottoms, and evergreen forests of Mexico and the southwestern United States.
外見
This medium-sized, sleek jay features a brilliant, dull-blue back, wings, and tail, contrasted by a pale gray breast and belly. Unlike the related Western Scrub-Jay, the Mexican Jay has a mostly uniform gray-blue head without a strong white eyebrow or dark breast band. Its bill is heavy, black, and straight, and its eyes are dark. Adults are uniform in color, whereas juveniles can be distinguished by their distinctive pinkish or pale-based lower mandibles, which darken as they mature.
界Animalia門Chordata綱Aves目Passeriformes科Corvidae属Aphelocoma
カテゴリ
鳥類レア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
Juvenile Mexican Jays have a distinctive pale or pinkish bill that gradually turns fully black as they reach adulthood.
Like other corvids, they have exceptional cognitive abilities, including recognizing individual humans and remembering the locations of thousands of hidden seeds.
Mexican Jays are highly social and form stable flocks of up to 25 individuals that stay together and defend territory year-round.
特殊能力
能力
Cooperative Breeding
Non-breeding flock members actively assist in feeding, defending, and incubating the young of dominant pairs to increase chick survival rates.
能力
Acorn Caching
They possess an extraordinary spatial memory that allows them to bury thousands of acorns each autumn and retrieve them months later during winter.
能力
Complex Vocalizations
They use a wide repertoire of harsh scold calls, soft rattles, and mimicry to coordinate group movements and warn flock members of predators.
サイズと詳細
- 長さ
- 28+ cm
- 翼開長
- 39+ cm
- 体重
- 0.1+ kg
- 寿命
- 10+ 年
- Top Speed
- 40 km/h
- 一度の産卵数
- 3+
- 抱卵期間
- 17+ 日
- 渡りの距離
- 0 km
食性と食事
A highly opportunistic omnivore, eating a varied diet of nuts, seeds, insects, and small vertebrates depending on seasonal availability.
主な食物
- Acorns
- Pine nuts
- Beetles
- Caterpillars
- Lizards
- Bird eggs
採餌方法
- Foraging
生態系とのつながり
eaten by
Cooper's Hawk
Accipiter cooperii
The Cooper's Hawk is a major aerial predator of adult and juvenile Mexican Jays, prompting complex alarm call networks.
mutualism
Arizona White Oak
Quercus arizonica
The jay feeds heavily on its acorns and acts as a key seed disperser by caching them in the ground, facilitating forest regeneration.
parasite
Brown-headed Cowbird
Molothrus ater
Occasionally attempts to parasitize Mexican Jay nests, though the jay's cooperative nest defense highly limits success.
特徴
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別名
まだ別名はありません。
コレクション
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Mexican Jayを見分けるには？
Mexican Jayを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Mexican Jayの長さは何ですか？
28+ cm
Mexican Jayの翼開長は何ですか？
39+ cm
Mexican Jayの体重は何ですか？
0.1+ kg
Mexican Jayの寿命は何ですか？
10+ 年
Mexican Jayのtop Speedは何ですか？
40 km/h
Mexican Jayは何を食べますか？
A highly opportunistic omnivore, eating a varied diet of nuts, seeds, insects, and small vertebrates depending on seasonal availability.
Mexican Jayは通常どこに生息していますか？
Found primarily in montane pine-oak woodlands, canyon bottoms, and evergreen forests of Mexico and the southwestern United States.
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観察場所
公園15 件の観察12 種
Arizona, US
Chiricahua National Monument Historic Designed Landscape
ここで見られるかも Yarrow's Spiny Lizard と Mexican Jay.
ガイドを見る →
公園15 件の観察12 種
Arizona, US
Faraway Ranch Historic District
ここで見られるかも Mexican Jay, Yarrow's Spiny Lizard と オジロジカ.
ガイドを見る →
公園21 件の観察12 種
Arizona, US
Madera Canyon
ここで見られるかも Broad-Billed Hummingbird, Mexican Jay と Rivoli's Hummingbird.
ガイドを見る →
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