Description.
Grouse dressed like most other birds Galliformes like chickens. Their size varies from the size of 31 cm and a mass of 0.3 kg of up to 95 cm with a mass of 6.5 kg. Male grouse size larger than the females, and can be sized two-time such as Capercaillie, the largest species in this family. Their feet covered with hair to toes, and in the winter of fuzz grow up side to facilitate their toes walking on snow. Unlike chickens, they do not have toes protruding on the back foot.Life.
These birds generally herbivores, they eat buds, leaves, twigs, and so forth. Accounting for 95 percent of the mass of the food is from plants. But their food is varied each season.Grouse newly hatched young are fed insects and invertebrates, and gradually reduced until towards the food menu adult grouse. Some species that live in the forest eat conifer needles, dislikes most vertebrates. To digest food, grouse has a large cache and has a length of intestine that comes with the cecum contains symbiotic bacteria digesting cellulose.
Grouse species that live in the woods just gathered in the autumn and winter. More social species of grassland and tundra species are the most social, they form a herd of up to 100 individuals in winter. The whole grouse spend their entire lives on the ground, although there are signs of danger when they take off and away quickly.
Most species remain in the area to breed them throughout the year and take only little seasonal movements. Some individual species such as Ptarmigan and Willow Grouse migrate hundreds of kilometers away.
Reproduction.
All species except Willow Grouse grouse is polygamy. Many species are in a relationship when dawn early morning. When the mating season, the male grouse have colored crested interesting, and some species have bright colors around his neck. They demonstrate their coat color, giving them the best sound quite varied each species, and do other things like wings or bout made between male grouse.They formed a shallow nest on the ground, sometimes covered with plant material. Grouse females lay 5 to 12 eggs and done gradually every day or two days. The eggs are shaped like eggs and pale yellow with slight brown spots. After the last egg spawn, grouse females incubate for 21 to 28 days. Young grouse hatch with a brownish-yellow color with a thick fuzz, and leave the nest soon after hatching. They soon develop feathers and can fly a little before the age of two weeks. The female will care for the young grouse to reach their first autumn, and in the case of the Willow Grouse, the male caregiver. Grouse will reach sexual maturity in the following spring, but often put off marriage until next year.
Population.
Grouse make biomass in the number of vertebrates in arctic and subarctic regions. Their numbers will decline dramatically in bad weather conditions or if the number of predators much. Grouse is the main food lynx, fox, marten, and birds of prey. But as they spawn enough, their number can add up quickly.Tundra species can retain their number, while grassland and forest species have been significantly reduced amount due to the loss of their habitat. Most grouse species are on the IUCN Red List with a status of "low risk" and "near threatened". However, species that live in grasslands status as "vulnerable" and Gunnison Sage-Grouse status "precarious".
Most Unique Rare birds in the world.
Sage Grouse bird (Centrocercus urophasianus) is the rarest birds in the world. The original berhabitat in the Americas region, according to the researchers these birds numbered only 5,000 in the wild.Bird discovered 13 years ago is likely to become extinct if not addressed by the experts of animal conservation. In a period of approximately a decade, the population has declined.
"In my point of view, Gunnison Sage Grouse is a species of birds that are at risk in all regions of North America," said John Fitzpatrick of the Cornell Lab of Ornithology.
This bird has a unique behavior when they wanted to marry. On entering the breeding season, the male bird Sage Grouse will wag pointed tail and make a specific sound and air bag inflating yellow on their chest.
Fitzpatrick and colleagues are now focusing on the survival of these rare birds. Animals which will be designated as endangered bird species or the Endangered Species Act is only lived in eastern Utah and Colorado, USA.
"Gunnison Sage-Grouse are now in danger of collapse of the local population, where if this is the case, then produces the extinction of the species," said Fitzpatrick. He said all parties ranging from public agencies and private landowners should be able to help stabilize the bird populations through conservation planning and community education.
Sage Grouse is an animal with a permanent local habitat (only available in the United States). However, these birds move at short distance to the lower ground when entering the winter.
These birds forage on land by eating insects and some plant species. Sage Grouse can not digest grains as hard as other grouse. These animals nest in the ground, precisely under a bush or grass.
Thank you for reading this article. Written and posted by Bambang Sunarno. sunarnobambang86@gmail.com
author:
https://plus.google.com/105319704331231770941.
name: Bambang Sunarno.
http://primadonablog.blogspot.com/2015/08/do-you-know-birds-grouse.html
DatePublished: August 27, 2015 at 11:03
Tag : Do You Know Birds Grouse.
Code : 7MHPNPADAEFW
