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很欢乐[憧憬]// @六荒 :这算不算小型摩天轮(超高速版本)

- 转发 @颜文字君 : 啾啾:“快过来!快过来!康康,我发现了个好地方(〃•⊖•〃)”

twi:magogogoro

:icon_weibo: weibo.com/6752059914/JATPWvbE2

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罗德里格斯渡渡鸟(Rodrigues solitaire),大多数人根本没听说过这个名字。它是毛里求斯共和国的罗德里格斯岛(Rodrigues)上特有的一种鸟。和毛里求斯岛上的渡渡鸟是亲戚。跟渡渡鸟一样,它是一种笨重的、不会飞的鸠鸽目鸟类,因人类捕杀和物种入侵而灭绝,看上去很呆。但你绝对想不到,它是携带“一对金锤”的斗士!

雄性罗德里格斯渡渡鸟的腕掌骨(carpometacarpi,鸟类特有的骨骼结构,由腕骨和部分手掌的骨头愈合而成,大概在鸡翅翅尖的位置)上,骨质增生出一大块,形成一个大骨瘤。这是它用来打击敌手的武器。

虽然不会飞,但这种鸟拥有相当发达的胸肌,以便更有力地挥舞翅膀。从发掘出来的骨骸看,相当一部分罗德里格斯渡渡鸟的骨头上都有骨折愈合的痕迹,特别是尺骨(14%的尺骨都有伤痕),而它的亲戚渡渡鸟就很少见。说明罗德里格斯渡渡鸟相当好战,不少同类都伤在这对“金锤”之下。

罗德里格斯渡渡鸟雄性比雌性重一半,在鸟类里这个体重差距算是很大的,也说明雄性之间常发生激烈的格斗(雄性好战的物种,体型会进化得更大以取得重量上的优势)。根据17世纪末的少量观察记录,罗德里格斯渡渡鸟挥舞翅膀会发出像打雷(一说像拨浪鼓)的声音,隔着一百多米都能听到!

图1,唯一由目击者绘制的罗德里格斯渡渡鸟,看上去呆头呆脑的。图片来源:Julian Hume, Lorna Steel / Biological Journal of the Linnean Society (2013)

图2,罗德里格斯渡渡鸟骨架,雌性比雄性小得多。图片来源:Julian Hume, Lorna Steel / Biological Journal of the Linnean Society (2013)

图3,腕掌骨上的大骨锤。图片来源:Julian Hume, Lorna Steel / Biological Journal of the Linnean Society (2013)

图4,不同时期的复原图。图片来源:Martin Rodriguez-Pontes / Historical Biology (2014)

:icon_weibo: weibo.com/1862961765/JBu0MlTM2

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RT Steve Gardner
Yay! My @greensock ScrollTrigger demo is the second most loved @CodePen of 2020! 😮🎉.
There is some amazing work in the list, you should check it out...
Steve Gardner: I finally found some time to have a play with @greensock ScrollTrigger! It's pretty great! I made this @CodePen, it's a little rough around the edges (only tested on a few devices) but was surprisingly simple to put together. ✈️
codepen.io/ste-vg/full/GRooLza

:sys_twitter: twitter.com/steeevg/status/134

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🚀🎨 Jetpack Compose makes Android UI easier!
#JetpackCompose is a declarative UI toolkit built for the demands of creating modern user interfaces. Follow along as @crafty walks through examples of theming, animation, layout, and more.
See how →
goo.gle/2WJgAb7

:sys_twitter: twitter.com/AndroidDev/status/

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Dear Doctor, thank you for being with us throughout this year. Let's have some sweet cakes and enjoy the firework show to welcome 2021. Happy New Year, Doctor!
#Arknights #Yostar #NewYear2021

:sys_twitter: twitter.com/ArknightsEN/status

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#明日方舟
【麦穗与赞美诗】
//空弦
“兰登修道院所属修士,干员空弦,为了重建闻名遐迩的兰登修道院,今日起与贵司正式合作,请博士务必过目一下这些商务合作条款!”

________________
兰登修道院修士席德佳,代号,空弦。
为了避免兰登修道院关门大吉而行走于大地各国,寻求各种靠谱的合作方。听上去,比起修士,倒像是一介行商。但兰登修道院的古老职责是护卫教宗安全,空弦所掌握的作战技巧极其娴熟,虽然缺乏一定在恶劣环境中的实战经验,但“修道院不过花架子”这种传言,在见识过空弦的箭术后,不攻自破。
不过,空弦提出的商业合作条款建议实在是太多了。有没有谁能去提醒她一下,罗德岛暂时不打算做啤酒分销商的?

:sys_bilibili: t.bilibili.com/475228708152862

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@vim
Well, I think there should also be a Nano Group :awesome:

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