- published: 04 Apr 2017
- views: 218
Birds (class Aves) are a group of endothermic vertebrates, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines, sometimes known as perching birds or, less accurately, as songbirds.
The fossil record indicates that birds are the last surviving dinosaurs, having evolved from feathered ancestors within the theropod group of saurischian dinosaurs. True birds first appeared during the Cretaceous period, around 100 million years ago, and the last common ancestor is estimated to have lived about 95 million years ago. DNA-based evidence finds that birds radiated extensively around the time of the Cretaceous–Paleogene extinction event that killed off the non-avian dinosaurs. Birds in South America survived this event and then migrated to other parts of the world via multiple land bridges while diversifying during periods of global cooling. Primitive bird-like "stem-birds" that lie outside class Aves proper, in the group Avialae, have been found dating back to the mid-Jurassic period. Many of these early stem-birds, such as Archaeopteryx, were not yet capable of fully powered flight, and many retained primitive characteristics like toothy jaws in place of beaks and long bony tails.
The Eurasian blue tit (Cyanistes caeruleus) is a small passerine bird in the tit family Paridae. The bird is easily recognisable by its blue and yellow plumage, but various authorities dispute their scientific classification.
Eurasian blue tits, usually resident and non-migratory birds, are widespread and a common resident breeder throughout temperate and subarctic Europe and western Asia in deciduous or mixed woodlands with a high proportion of oak. They usually nest in tree holes, although they easily adapt to nest boxes where necessary. Their main rival for nests and in the search for food is the larger great tit.
The Eurasian blue tit prefers insects and spiders for its diet. Outside the breeding season, they also eat seeds and other vegetable-based foods. The birds are famed for their skill, as they can cling to the outermost branches and hang upside down when looking for food.
The Eurasian blue tit was described by Carl Linnaeus in 1758 in the 10th edition of his Systema Naturae under the binomial name Parus caeruleus.Parus is the classical Latin for a tit and caeruleus is the Latin for dark blue or cerulean. Two centuries earlier, before the introduction of the binomial nomenclature, the same Latin name had been used by the Swiss naturalist Conrad Gesner when he described and illustrated the blue tit in his Historiae animalium of 1555.
Videos for Cats to Watch - Forest Birds - Vögel des Waldes - Oiseaux de La Forêt - Vogels Van Het Bos - Fåglar av Skogen - Aves del Bosque Video Produced by Paul Dinning - Wildlife in Cornwall Filmed in March 2017
The Ultimate Videos of Birds for Cats To Watch The birds in the video are - First Clip - Eurasian Jays with a Magpie sneaking in towards the end. 2:15 - Nuthatches, Coal Tits and Blue Tits. 3:19 - Crow, Coal Tit, Nuthatch and Chaffinch. 4:27 - European Goldfinches. 8:14 - Great Tits, Nuthatches, Coal Tits, Robins. 11:47 - Nuthatch, Robin, Blue Tit, Great Tit, Coal Tit. 13:31 - Robins. 15:31 - Female Blackbird, Coal Tit, Great Tit, Blue Tit and Nuthatch. Video Produced by Paul Dinning - Wildlife in Cornwall
Birds in The Summer Garden : Filmed in Slow Motion - Featuring Blackbird (male and female), Blue Tit, Great Tit, Dunnock, House Sparrow, Magpie and Robin Filmed in June 2016 Video Produced by Paul Dinning - Wildlife in Cornwall
Parrots: Majestic Birds (Nature Documentary) NATURE tracks down the cockiest characters in the land down under in Parrots in the Land of Oz. We keep them in cages in our homes, but in their natural state they are independent birds who can seek out water over hundreds of miles through pure instinct. We feed them seed from a pet store, but they can find food in a wide variety of habitats. We give them plastic toys and mirrors to play with when in fact in the wild some have figured out how to use tools to communicate and attract mates. For tens of millions of years, parrots have survived and thrived in Australia even as the continent underwent dramatic changes, including some brought about by man. Though some, like the golden-shouldered Parrot are threatened, these tough Aussies have adapt...
Garden Birds - Oiseaux de Jardin - Gartenvögel - Tuinvogels - Trädgårdsfåglar - Featuring Blackcap, Bullfinch, Linnet, Goldfinch, Robin, Blue Tit, Blackbird, Great Tit, Dunnock and House Sparrow. Video Produced by Paul Dinning - Wildlife in Cornwall
This is one of a series of Nature Sounds videos designed for various needs:- as a calming sound to play in the background while studying or as a soothing sound to play while you sleep. These videos can be used for many relaxation requirements and meditation, let me know how you use this video. With each video there will be a tip to help you with your studying or how to achieve a relaxed sleep. Gifts to buy:- Your favourite ‘Nature Scene’ Soundscapes as 8 Hour mp3 downloads. https://gumroad.com/relaxingnaturesounds 1 Hour HD Nature Videos as mp4 downloads. https://gumroad.com/relaxingnaturevideos Natures calming sounds and vision captured for your viewing pleasure. Great classic novels as Audio Book mp3 downloads or as unique sensory videos https://gumroad.com/childrensaudiobooks With...
Things that fly are drawn. Click to Subscribe ► http://bit.ly/GrumpSubscribe Doodlers in this episode ► Ross O'Donovan ► https://twitter.com/RubberNinja Chris O'Neill ► https://twitter.com/OneyNG Holly Conrad ► http://bit.ly/1Hu6N8Z https://twitter.com/HollyConrad Game Grumps are: Egoraptor ► http://www.youtube.com/Egoraptor Danny ► http://www.youtube.com/NinjaSexParty Game Grumps on social: Facebook ► https://www.facebook.com/GameGrumps Twitter ► https://www.twitter.com/gamegrumps
19 of the funniest birds you'll see this week. The Pet Collective is home to the top trending clips, most entertaining memes, and funniest animal videos online. Simply put, we think animals are the best ever. If you agree, let’s make it YouTube official right here, right meow: Subscribe to The Pet Collective: http://bit.ly/tpcsub Website: http://www.thepetcollective.tv Facebook: http://www.facebook.com/thepetcollective Instagram: http://www.instagram.com/petcollectivetv Pinterest: http://pinterest.com/petcollectivetv/ Want to submit your own awesome pet vid to us? There's a link for that! jukinmedia.com/video-submissions Watch the Originals: https://www.youtube.com/watch?v=6_-4KArFR08 https://www.youtube.com/watch?v=t1wAjcWHkDY https://www.youtube.com/watch?v=pLJegq01S6A https://www.y...
Birds, they're walking all around
Birds, they're making little sounds
Have you seen any birds today
I will blow those birds away
Birds, birds, birds, birds
Worms, they're sneaking underground
Worms, they're making tiny sounds
Dirt, is what they eat
Rocks and stones make a worm complete
Worms, worms, worms, worms
Birds, they're looking pretty cute
Birds, I see 'em, I shoot
Have you seen any birds today
I will blow those birds away
Birds, birds, birds, birds