鸟类

Writing on Dec. 18 in the journal Science, they said this behavior is seen in certain existing species of birds. Scientists believe birds evolved from small, feathered predatory dinosaurs more than 150 million years ago. The three types of dinosaurs, Troodon, Oviraptor and Citipati, lived roughly 75 million years ago and were theropods.

12月8日科学杂志上发表的文章说这种行为在某些现存的鸟类中也发现过科学家认为鸟类时从一亿五千万年前的小的、长满羽毛的食肉恐龙进化而来的，这三种类型的恐龙--秃顶龙属、Oviraptor、Citipati--大约活在七千五百万年前。

Not only do co-operative breeders interact closely with many more individuals than non-co-operative birds, but these individuals are also usually close relatives.

不仅合作哺育的鸟类之间的联系比非合作哺育的物种更加密切，而且这些进行合作的鸟类本身还是近亲。

Owned by the conservation organisation Nature Seychelles, Cousin is a con-servation success story that has undoubtedly saved the Seychelles warbler population from extinction as well as being a reserve for a wide range of fauna, including doves, skinks and giant tortoises.

作为多种鸟群的栖息地，库金岛保护了塞舌尔的鸟类，使其脱离灭绝的危险，乃是鸟类自然保护区的成功典范。

This study investigated (1) the relationship between tongue morphology and diet in 14 passerines birds in Taiwan and (2) which tongue character was most correlative with diet. Moreover, I compared the diet of a single species at different places and times.

本研究以台湾山区常见的燕雀目鸟类为对象，探讨舌部形态与食性的关系，并了解食物选择受到何种舌部形态特质的影响较大；此外，也探讨鸟类食性在不同空间与时间上是否有差异。

Species had three kinds of diets during the non-breeding season:(1) mainly invertebrates,(2) mainly fruits, and (3) mainly nectar. This study demonstrated that the diets of 14 passerines during the non-breeding season were significantly correlative with tongue morphology (r=0.424, P .05) and were most correlative with brush length and width of the 3/4 position (r=0.62, P.05). For example, Yuhina brunneiceps's primary diet is nectar and it has the brush-tipped tongue with the longest brush length. Niltava vivida mainly forages for fruits and has a tongue with longer width of the 3/4 position.

十七种鸟类在非生殖季时的食性，亦可分为三大类群：（1）主食无脊椎动物；（2）主食果实；（3）主食花蜜。14种鸟类的舌部形态与其非生殖季食性具有显著相关，其中，仅舌分叉长及3/4位置的舌宽与其食性较有关系，可解释非生殖季食性约36%的解释变异量，也就是分叉长较长的舌头属於刷状卷曲舌形，主食花蜜，以冠羽画眉为代表；3/4位置舌宽较大的舌形，主食果实，以黄腹琉璃为代表。

The high count for this winter may be due to:(1) more sites were covered;(2) better trained participants, most of whom have received two trainings;(3) better equipment and bird field guidebooks.

本次调查数量比上次调查数量高的原因可能是：(1)本次调查比上次增加了5个地点；(2)很多的调查人员已经经过了两次培训，鸟类方面的知识和技术提高了；（3）我们为所有调查点提供了《中国鸟类野外手册》，又配备了更多的望远镜，增加了水禽识别和计数的精确性。

Five area in three sub-climatic belts are studied, which are the bound area of Jinhe river on Weihe river, South area of Zhengzhou City in Henan, North Area of Nanchang in Jiangxi, South bank of estuarine of Yangtze river in Shanghai and North bank of estuarine of Zhujiang river in Shenzhen by line transect and point count methods from Winter to the next Fill in different scales.

探讨大尺度空间上鸟类多样性和群落结构的异质性、不同统计工具的应用和改良、以及景观生态学和鸟类群落生态学在空间尺度和异质性上的交融等问题，得出以下结果

Plant disease and desertification caused that the similarity between fixing sand forest bird community and desert bird community was higher.

病虫害和荒漠化使固沙林鸟类群落与荒漠鸟类群落的相似性较高。

Dubacher, a gregarious, ruddy-faced man, seems an unlikely savior of birds, having no degree in ornithology or zoology or formal training in wildlife care.

他既没有鸟类学或动物学的学历，也没有受过野生动物保护的正规训练，看上去不像是个救助鸟类的人。

Like, now we locate province in Guangdong new meeting county wreath city country a day horse village a day horse river on, say the history of this river, before also needing to make track for till more than 300 years ……you now what to see is 1 the very unique big banyan is in the world, and then is become the landscape of"only wood become wood" by people, dwell for rest 1000 up to 100 birds on this tree, and exuberant big banyan also for the birds provided to dwell for rest living ground goodly, bird as happy as a lark living here, is also become "the heaven of bird" by people.

好，现在我们位于广东省新会县环城乡天马村天马河之上，要说这条河的历史，还要追寻到300多年之前……您现在看到的是一棵世界上绝无仅有的大榕树，又被人们成为&独木成林&之景色，这棵树上栖息着成千上百种鸟类，而茂盛的大榕树也为鸟类提供了良好的栖息生活之地，鸟很快乐的生活在这里，也被人们成为&鸟的天堂&。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐