鸟类的

Most Birds mate by joining their cloacas in a "cloacal kiss"; muscular contractions transfer the sperm from the male to the female.

但多数鸟类仅以泄殖腔互相接触，藉肌肉收缩而把雄鸟的精子送给雌鸟。有胎盘哺乳动物及多数硬骨鱼无泄殖腔。

Any of various small,often brightly colored tropical American birds of the family Coerebidae,having a curved bill adapted for suck ing nectar from flowers.

细嘴食蜜鸟，旋蜜雀一种小而颜色鲜艳的蜜鸟科美洲热带鸟类，有弧形喙，适于从花中吮吸花蜜

Recently, Dr Copping organised a workshop on the impact of agronomic practice on the decline of farmland birds with particular reference to integrated crop management practices.

最近，由于农田鸟类数量下降对农业活动的影响，Copping 博士组织成立了一个工作组，专门研究作物综合管理措施。

And it would add another footnote to the legacy of the family Corvidae , which includes crows , ravs , jays and magpies .

而且，这将给鸦科鸟类(包括乌鸦，渡鸦，松鸦和喜鹊)原有的知识添加了新内容。

The results showed that the toxicity of brofluthrinate to birds, bees and earthworms is low, to fish is medium, and to Daphnia, alga, silkworms is high.

结果表明：其对鸟类、蜜蜂和蚯蚓的毒性较低；对鱼类属中等毒性；对B045类、藻类和家蚕属高毒性。

Today, most researchers agree that birds are, indeed, a branch of the Dinosauria.

今天，多数研究人员都一致同意鸟类的确是恐龙的分支物种。

Now, taxonomists argue that since birds are descended from dinosaurs they should be classified merely as a subgroup of the Dinosauria.

目前，分类学家认为，既然鸟类起源于恐龙，就应当将它们划分为恐龙的一个分支。

Patterns of breeding birds along an elevational gradient were investigated in northern Taiwan.

本研究探讨台湾北部陆域繁殖鸟类沿海拔梯度的变化型态。

"Any of nearly 60 species of diurnal bird s of prey in the family Falconidae, characterized by long, pointed wings and swift, powerful flight."

隼形目隼科鸟类。近60种，为昼出的猛禽，主要特征是翅长而尖，飞行迅速有力。

"Any of nearly 60 species of diurnal birds of prey in the family Falconidae, characterized by long, pointed wings and swift, powerful flight."

隼形目隼科鸟类。近60种，为昼出的猛禽，主要特征是翅长而尖，飞行迅速有力。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。