八哥怎么看是成年

一般情况下，成年犬的恒齿分布：门齿上下各6枚，犬龄上下各2枚，前臼齿上下各8枚，臼齿上颌为4枚，下颌为6枚，总计42枚。 幼年犬的乳齿数量分布：门齿上下各6枚，犬齿上下各2枚，前臼齿上下各6枚，总计28枚。 成犬的年龄在牙齿的生长、磨损、锐钝等方面看得最为明显，可以从犬齿的数量、力量大小、新旧、亮度等方面判断幼犬的年龄。 判断犬的年龄大小粗略依据以下标准：

20天左右牙齿逐渐参差不齐地长出来。 30―40天，乳门齿长齐。 2个月，乳齿全部长齐，尖细而呈嫩白色。 2―4个月，更换第一乳门齿。
5―6个月，更换第二、第三乳门齿及全部乳犬齿。 8个月以上，牙齿全部换上恒齿。 1岁，恒齿长齐，光洁、牢固，门齿上部有尖突。
1.5岁，下颌第一门齿尖峰磨灭。 2.5岁，下颌第二门齿尖峰磨灭。 3.5岁，上颌第一门齿尖峰磨灭。 4.5岁，上颌第二门齿尖峰磨灭。 5岁，下颌第三门齿尖峰轻微磨损，同时下颌第一、第二门齿磨呈矩形。 6岁，下颌第三门齿尖峰磨灭，犬齿钝圆。 7岁，下颌第一门齿磨损至齿根部，磨损面呈纵椭圆形。 8岁，下颌第一门齿磨损向前方倾斜。 10岁，下颌第二及上颌第一门齿磨损面呈纵椭圆形。
16岁，门齿脱落，犬齿不全。
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你看鸟的年龄可以看鸟的腿，如果鸟的腿上已经起了很多瓦状的凸起，那么鸟最少1年多了，小鸟的腿是比较光滑的，还有当年的小鸟腿很多是黑灰色的，老鸟腿会变成黄色。我就会这么多

今早在山洞里抓到一只八哥，因秋季多雨，它的羽毛淋湿了，不能飞，只能满地乱串，故此我才轻易的把它抓住。
由于是野生的，放到鸟笼里的它非常恐惧，不象家养鸟那样乖稳，而是上下扑笼，折腾到中午才稍微静下来，放的肉丝、谷粒它都不吃，水也不喝，已经一整天了

八哥
中文/我从山里来e
英文/西沟散人
贾二从鸟市买回一只八哥。八哥在笼中跳来跳去，望着蓝天。贾二明白，八哥想自由。
贾二说，八哥啊八哥，我花钱把你买来，你要对得起我，我才能还你自由。
八哥歪着脑壳，明亮的眼睛看着贾二，似乎在认真地听。贾二就认定，这是一只有灵性的八哥。于是，一有空贾二就教八哥说人话。八哥很快就学会了说恭喜发财，红包拿来，请进。
贾二官不大，但有实权，登门拜访的客人来来往往。
很让贾二高兴的，八哥成了他收红包的得力帮手。只要客人进门，八哥就会说恭喜发财，红包拿来。客人对八哥苦笑，赶紧拿出红包。贾二边接红包，边说，别和鸟儿一般见识。
一日，来了几个警察，八哥照例喊恭喜发财，红包拿来。
警察看着八哥。
贾二赶忙开了鸟笼门。八哥扑棱棱飞出。
警察说，多机灵的鸟儿，怎么放了。
贾二尴尬地笑，它说它要自由。
警察要带走贾二，开了车门。
这时，八哥在院内树枝上大声说，请进，请进。
Mr. Jia’s Parrot
Mr. e
Mr. Jia purchased a parrot at a Birds Fair. The parrot treaded about in the cage, looking up to the blue sky. The bird wanted freedom. Mr. Jia knew that.
Mr. Jia said to the parrot, “Hey, buddie, I paid for you. Only if you live up to me can you get the freedom.”
The bird wagged its head, its bright eyes fixed on its master, as if listening in great earnest. Mr. Jia decided that this parrot was intelligent enough, so that he began to teach the bird to talk whenever possible. Soon the parrot learned to say “gong xi fa cai hong bao na lai”(“For a good fortune, bring a red packet.) and “qing jin”(“Come in”.)
Though not high-ranking, Mr. Jia was in real power, and his residence was frequented by a constant flow of visitors.
To Mr. Jia’s much delight, the parrot contributed a lot to his collecting red packets. Once the visitor stepped in, the bird would say “gong xi fa cai hong bao na lai”. With a bitter smile, the visitor speedily handed over the red packet. Mr. Jia took the packet immediately as he was saying, “Don’t take it seriously!”
One day, several policemen stepped in. As usual, the parrot uttered “gong xi fa cai hong bao na lai”.
The policemen stared at the bird.
At that point, Mr. Jia opened the cage and the parrot fluttered out.
“What a cute bird! Why set it free?” One policeman asked.
“He says he wants freedom.” Replied Mr. Jia, with an embarrassed smile
The door of the police car was opening to Mr. Jia when the parrot alighted on the bough of a tree in the court, crying aloud, “qing jin! qing jin!”