what do you know about the avian intumentary system and what it looks like?
610559
You mean integumentary system?  Skin and feathers....
808019
you can pluck a feather and have genetic testing done, which is the only way to know for absolutely sure, but adult plumage is a very good indicator. so just be patient and youll be suprised
69853
nothing, its just that its hatched by different kinds of chickens. that is it.thanks for the points!
258412
I never thought I could answer this question and I took it as a challenge to my grey Google matter. \n\nEvidently I have managed to find one place where you can get all those information and more and here is the link...\n\nhttp://www.planecrashinfo.com/\n\n.:Fishie:.
1159700
Hi there!  I hope I can help...\n1) c\n2) b (lichens are made up of fungi & algae that live together & mutually help each other - algae makes food through photosynthesis while the fungi helps retain water & minerals).\n3) See what you make make of this: http://en.wikipedia.org/wiki/Biophilia\n4) b (visually compare scales to feathers - claws don't cover an animals body)\nI don't know the answers to the other two, but I am very sure of the above answers.
270283
The tapetum lucidum (note the spelling) has different characteristics according to the species. The color reflected depends on its structure but also on the color of the iris. \nFor instance, some bony fish, crocodiles, and marsupials have retinal tapeta (plural of tapetum). In other vertebrates the tapetum is in the choroid and may be formed by guanine (sharks), cells with refractive material (carnivores, rodents, cetaceans), or extracellular fibers (cow, sheep, goat, horse). The color varies with species, age, and amount of pigmentation in the eye and skin (including fur color); see figure 2 in the paper at the link.\nSo the answer is yes, there are different colors of tapeta lucida; and no, the red color is not an indication of "wild" animals. In fact, many animals that are diurnal and lack a tapetum lucidum (for example primates, squirrels, birds, pigs) show a red or orange reflection. \n\nSee this review article (free access) for more information:\nhttp://www.blackwell-synergy.com/links/doi/10.1111%2Fj.1463-5224.2004.00318.x
945337
I think I know what you mean.   Hairs, sweat glands, sebaceous glands and nails are structures associated with the skin.  Check out this site for more explanation of skin appendages it can explain them in more detail than I can.
191430
Here are two links. The first dscribes it's taxonomical charicteristics, the second link has pictures.\n\nGood Luck.
952433
The adult's plumage is black and white. Its facial skin is yellow (it turns orange during nesting periods) and devoid of feathers. The tail is wedged and easily distinguished in flight. The nestlings are dark brown and gradually go light until they reach adulthood at the age of 5.\n\nYou could get more information from the link below...
962220
There's a lot more evidence than that which ties dinosaurs and birds together.\n\nChemical makeup is not where the support for the "scales" of the dinosaur evolving into feather comes from. It comes from the fossilized outlines of feathers found surrounding certain fossils.\n\nThey share many skeletal features, including the shapes of their hips, a shape only found in dinosaurs and birds.\n\nThey shared very similar lung structures, which are a series of air sacs, very different than what we have.\n\nThey had four chamber hearts, again, much like birds have.\n\nCertain fossils have been found that suggest some dinosaurs slept like birds, with their heands tucked under their arms.\n\nThe use of gizzard stones was common between both species.\n\nThis is called convergence. Many different pieces of evidence that come together to support a claim. Is it airtight? Is it absolutely certain that birds evolved from dinosaurs? No. However, even if it isn't true, this is not an either/or choice. It does not mean that a god created them.\n\nOh, and birds didn't come from pterodactyls. In fact, pterodactyls aren't technically dinosaurs. The closest common ancestor between birds and dinosaurs would have come from the raptors.
463046
Arthropods have segmentation and jointed appendages (which some can use for exciting things like... flying or walking).\n\nhttp://www.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/\n\nor \n\nhttp://evolution.berkeley.edu/evolibrary/article/0_0_0/arthropods_toc_01\n\nCheers -
90602
its a member of the kingdom Protista, which includes eukaryotic, mostly unicellular organisms with animal-like (protozoa), plantlike (algae), or funguslike (slime moilds) modes of nutrition. I take microbiology in collage if u need more info email at Njacobs7477@yahoo.com
37162
Oddly enough there are only two pigments in birds and amphibians two, exactly the same two pigments. Yet we see birds and frogs in every colour of the rainbow. So we really shouldn’t be surprised to see a few bright mammals.\n \nThe way that animals usually generate blue and green colours is by utilising fibres arranged in rows or grids to refract light. That allows the skin to scatter the short blue and green wavelengths back to the observer while absorbing the longer reds. In the case of the mandrill the skin contains rows of collagen fibres designed to achieve exactly that purpose.\n\nThe only other blue mammal I know of is the vervet monkey, which has bright blue testicles. You can see a picture of one in the link below.
139588
Maria, \n\nBirds are bipedal, warm-blooded, oviparous vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. I will attach some links to follow for your question as it is a very detailed one.
5721
I think it may help to clarify what the other 2 posters have said, as they have 'clouded' the issue a bit:\n\nThey lack external ears, have a diapsid skull (two openings on either side), and posess a "parietal eye" on the top of their head. Other lizards also have this "third-eye," which contains a retina and is functionally similar to a normal eye, though the function has not been clearly recognized and a scale grows over it in adult tuataras.\n\nAs it contains an actual retna, it can infact see.  But, to what extent, who knows.
183391
Grasshoppers and all insects have trachea, that is, tubes formed by invagination that extend inside their bodies and carry oxygen directly to the tissues. It's a very efficient system, but doesn't work at large sizes.\n\nBirds have lungs and air sacs. Contrary to the mammalian system, the flow of air in birds lungs is continuous, and the capillaries are arranged at right angles to the airways. It's also very efficient. \nBut other than in their high efficiency, I don't see the similarities.
919408
The Epidermis\n\nThe epidermis is the outermost layer of the skin, and protects the body from the environment. The thickness of the epidermis varies in different types of skin; it is only .05 mm thick on the eyelids, and is 1.5 mm thick on the palms and the soles of the feet. The epidermis contains the melanocytes (the cells in which melanoma develops), the Langerhans' cells (involved in the immune system in the skin), Merkel cells and sensory nerves. The epidermis layer itself is made up of five sublayers that work together to continually rebuild the surface of the skin: \n\nThe Basal Cell Layer\nThe basal layer is the innermost layer of the epidermis, and contains small round cells called basal cells. The basal cells continually divide, and new cells constantly push older ones up toward the surface of the skin, where they are eventually shed. The basal cell layer is also known as the stratum germinativum due to the fact that it is constantly germinating (producing) new cells.\n\nThe basal cell layer contains cells called melanocytes. Melanocytes produce the skin coloring or pigment known as melanin, which gives skin its tan or brown color and helps protect the deeper layers of the skin from the harmful effects of the sun. Sun exposure causes melanocytes to increase production of melanin in order to protect the skin from damaging ultraviolet rays, producing a suntan. Patches of melanin in the skin cause birthmarks, freckles and age spots. Melanoma develops when melanocytes undergo malignant transformation.\n\nMerkel cells, which are tactile cells of neuroectodermal origin, are also located in the basal layer of the epidermis. \n\nThe Squamous Cell Layer \nThe squamous cell layer is located above the basal layer, and is also known as the stratum spinosum or “spiny layer” due to the fact that the cells are held together with spiny projections. Within this layer are the basal cells that have been pushed upward, however these maturing cells are now called squamous cells, or keratinocytes. Keratinocytes produce keratin, a tough, protective protein that makes up the majority of the structure of the skin, hair, and nails. \n\nThe squamous cell layer is the thickest layer of the epidermis, and is involved in the transfer of certain substances in and out of the body. The squamous cell layer also contains cells called Langerhans cells. These cells attach themselves to antigens that invade damaged skin and alert the immune system to their presence. \n\nThe Stratum Granulosum & the Stratum Lucidum \nThe keratinocytes from the squamous layer are then pushed up through two thin epidermal layers called the stratum granulosum and the stratum lucidum. As these cells move further towards the surface of the skin, they get bigger and flatter and adhere together, and then eventually become dehydrated and die. This process results in the cells fusing together into layers of tough, durable material, which continue to migrate up to the surface of the skin.\n\nThe Stratum Corneum\nThe stratum corneum is the outermost layer of the epidermis, and is made up of 10 to 30 thin layers of continually shedding, dead keratinocytes. The stratum corneum is also known as the “horny layer,” because its cells are toughened like an animal’s horn. As the outermost cells age and wear down, they are replaced by new layers of strong, long-wearing cells. The stratum corneum is sloughed off continually as new cells take its place, but this shedding process slows down with age. Complete cell turnover occurs every 28 to 30 days in young adults, while the same process takes 45 to 50 days in elderly adults.\n\nThe Dermis\nThe dermis is located beneath the epidermis and is the thickest of the three layers of the skin (1.5 to 4 mm thick), making up approximately 90 percent of the thickness of the skin. The main functions of the dermis are to regulate temperature and to supply the epidermis with nutrient-saturated blood. Much of the body’s water supply is stored