價格：免費
更新日期：2018-11-29
檔案大小：11M
目前版本：1.0
版本需求：Android 4.1 以上版本
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Birds Feathers Wallpapers HD
Feathers are epidermal growths that form the distinctive outer covering, or plumage, on birds and other, extinct species of dinosaurs. They are considered the most complex integumentary structures found in vertebrates and a premier example of a complex evolutionary novelty. They are among the characteristics that distinguish the extant birds from other living groups.
Although feathers cover most parts of the body of birds, they arise only from certain well-defined tracts on the skin. They aid in flight, thermal insulation, and waterproofing. In addition, coloration helps in communication and protection. Plumology (or plumage science) is the name for the science that is associated with the study of feathers.
Types of feathers:
Bird feathers are amazingly complex. Each feather is made from the protein Keratin. While keratin also makes up snake and lizard scales, it is a slightly different compound in birds. The three main types of feathers are the filoplumes (sensory feathers), the contour feathers, and the down feathers (insulation).
One of the reasons bird feathers are so complex is that each feather is made up of many different parts. The feather is similar in many ways to a palm frond. The rachis (same as in palms) is the central core. The area that the feather attaches to the bird is called the calamus. The rachis has barbs that extend from it, which collectively make up the vane. If you’ve picked up a feather you’ll notice that at the bottom there are several ‘non-flat’ parts that are called the pennaceous section.
Along the feather, each barb has a shaft called a ramus. From each side of the ramus are barbules and barbicels. In essence they act like modern day Velcro. One side can hook onto the other and keep the wing stiff. As a kid I’m sure everyone has run their fingers the wrong way down a bird feather and separated them. Birds can ‘zip-up’ their feathers by running them the other way and in essence, re-hooking the barbules and barbicels.
Birds Feathers Wallpapers HD contains wallpapers and pictures which you can save and also share through various social media platforms.
Birds Feathers Wallpapers HD allows you to set wallpapers on your phone.
You can save and share on Whatsapp, Hike, Telegram, WeChat, JioChat, Facebook, Instagram, Twitter, Pinterest, Allo, Snapchat, BBM, Viber, Line, LinkedIn, Messenger, Tango, IMO and many other social networking apps.
You can also mail if you want to this app provides you lots of options and ways to share or wish anyone you want to.
You can also save these images.
Feel free to give suggestions.
Thank You!!!
