Feeding birds has become so popular that prepared feed mixtures are readily available.
喂养鸟类已经变的如此普遍，以至于鸟的饲料随处可见。
But a study in the journal Current Biology suggests that feeding birds in winter can influence their course of evolution.
不过《当代生物学》杂志上的一项研究却表明，在冬季向鸟类投食可能会影响到它们的进化进程。
Daily feeding birds fed pearl millet shell can also be used barnyard grass 60%, millet 30%, millet 10% for the feed mixture.
珍珠鸟日常饲养喂以带壳小米，也可用稗子60%、小米30%、黍子10%混合供喂。
In addition to disturbing people the noise may disturb feeding birds on the intertidal flats in the vicinity of the alignment.
除了扰民，该等噪音可能会妨碍临近本工程线形的潮间带区域鸟类喂食。
This usually happens in hand-feeding birds that are either continuously overfed or hand-fed long after they should have been weaned.
这通常发生在手喂食鸟类，要么不断吃得太多或手喂食后不久，他们应该已经断奶。
Meanwhile, the brain also sends messages back to the retina via the centrifugal pathway, which originates from the isthmo-optic nucleus in ground-feeding birds such as pigeons.
同时，脑也通过离中通路对视网膜进行反馈调控，特别是在像家鸽这些地面觅食鸟类中，峡视核就是这条离中通路的起点。
Attracting and feeding wild birds are entertaining activities that have long been enjoyed by people all over the world.
吸引和喂食野生鸟类是世界各地人们长期喜爱的娱乐活动。
If feeding is stopped during severe weather, birds used to relying upon the feeders must starve.
如果在恶劣天气停止喂食，习惯依赖喂食的鸟儿就会挨饿。
Krebs hypothesizes that the herons in smaller flocks are watching for herons that they might follow to better feeding pools, which usually attract larger numbers of the birds.
克雷布斯假设，小群的苍鹭是在观察，它们可能会跟随被观察的苍鹭去更好的觅食池，那里通常会吸引更多的鸟类。
The mud is a feeding ground for large numbers of birds.
泥地是大量鸟类找寻食物的地区。
Tourists have long enjoyed feeding the birds.
长时间来，游客们都乐意给鸽子们喂食。
In winter feeding efforts are most satisfying to people and are of greatest benefit to birds.
在冬季，投食活动是最令人类满意的，对鸟类来说这项活动也是最有益处的。
They are important and necessary feeding and breeding grounds for migratory birds.
他们是候鸟必不可少的觅食和繁殖地，十分重要。
Birds will fatten themselves with heavy feeding in advance of a long migrational flight.
鸟类在长途迁徙飞行之前，会用大量的食物喂肥自己。
The Royal Society for the Protection of Birds (RSPB) is organising emergency feeding of several threatened species, including bitterns and cirl buntings.
英国皇家鸟类保护协会（RSPB）正在组织一项紧急喂养的行动 以救助那些濒危的的鸟类，如麻鳽和黄道眉鹀。
Even the tracks alone say a lot about the feeding behavior of the ancient birds, commented paleontologist Martin Lockley of the University of Colorado in Denver.
丹佛科罗拉多大学的古生物学家马丁•劳克雷评论说，即使只有这些足迹也很能说明这些古代鸟类的进食行为。
Elk and bears regularly walk underneath, and the visitor book is filled with stories of feeding squirrels and birds by hand.
树林里常有麋鹿和熊出没，旅客留言簿里记满了亲手为松树和鸟儿喂食的故事。
By feeding their dead to the birds of the air, the Parsees profane neither earth nor fire.
帕西人认为，将死去的人喂食给“天之神鸟”，他们就既不亵渎大地，也不亵渎圣火。
The mosquitoes and birds responsible for West Nile’s spread abound where people also live, raising the odds that a mosquito that picked up the virus feeding on a robin could transmit it to a person.
由于蚊子和鸟的作用，该病毒在人口密集的地方传播开来，这样当地人被携带了病毒的蚊子叮咬过后感染该病毒的几率就增大了。
While touching a bird when it is learning to fly can be detrimental to its ability to fly, it doesn't stop mother birds from feeding or caring for their chicks.
去碰一直正在学飞的小鸟会对它的飞行能力有负面影响，这不会让母鸟放弃抚养自己的小鸟。
Robins may not be the most abundant of birds, but mosquitoes find their blood particularly tasty, frequently feeding on them and turning them into viral "super-spreaders."
知更鸟可能不是当地数量最多的鸟类，但是对蚊子来说，它们的血就是美味佳肴，通过不断地吸血，鸟成了这个病毒的超级携带者。
The animals include rabbits, guinea pigs, chinchillas and birds, and each prisoner is responsible for feeding and watering their own pets.
这些动物中有兔子，天竺鼠，龙猫和鸟类。每个囚犯负责给自己的宠物喂食喂水。
Mixed flocks of several species often travel together, but when they are feeding or resting you will spot different birds on the ground, at mid-level heights and at the tree tops.
很多种鸟常常混群共同迁徙，但是当他们停下来觅食休息的时候，你就会发现不同的种类有的在地面上，有的在中层高度，有的则在树顶处。
Early mornings when the air is still cool and late evenings as the sun is setting are the most effective times to go birding because more birds will be active and feeding, making them easier to see.
天气凉爽的清晨和太阳渐落的傍晚是观鸟的最有效的时间，因为大部分鸟儿会在此时活跃和喂食，这样就更容易观察到它们了。
Urban birds have to adapt to an environment that is not their natural home and find new ways of feeding themselves.
城市鸟类必须要适应与自然环境大相径庭的环境，并在这种不一样的环境中找到能够使自己生存下来的新方式。
Homeowners have been feeding wild birds for a long time, but only now are scientists finally beginning to understand just how that affects urban ecosystems.
房主们长期饲养野生鸟类，但只有现在，科学家最终才明白这是如何影响城市生态系统的。
These birds do all of their feeding, sleeping and nesting on the water, when a family of grebes gets hungry they dive so fast that they often startle observers who call them the "Water witches".
这些鸟的吃、睡和筑巢全在水面上，当一个䴙䴘家庭饥饿时，牠们如此之快地潜入水中，会让观察者惊骇不已，称牠们为“水巫婆”。
These birds do all of their feeding, sleeping and nesting on the water, when a family of grebes gets hungry they dive so fast that they often startle observers who call them the "Water witches".
这些鸟的吃、睡和筑巢全在水面上，当一个䴙䴘家庭饥饿时，牠们如此之快地潜入水中，会让观察者惊骇不已，称牠们为“水巫婆”。
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