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JOrnitho



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ссылка на сообщение  Отправлено: 25.03.22 17:24. Заголовок: Galliformes and other animals for South America


Hello! I'm back with ideas for some new species for South America. I found in my computer an archive with some ideas for fauna and flora that I had some time ago and decided to show there to ask your opinion about them. The first is about a descendant of the domestic chicken.

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I also have in this archive some names for possible species that I never developed bayond some few facts. Maybe someone could help me make their descriptions.

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JOrnitho



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ссылка на сообщение  Отправлено: 12.11.22 17:13. Заголовок: I finished the descr..


I finished the description of the southern screamer's descendant.


Crowned screamer (Chauna coronata)
Many biomes changed in the Neocene. In South America, the great wetlands of the Pantanal disappeared, being replaced by savannas. The species that lived here were forced to adapt or would become extinct. The Southern screamer (Chauna torquata) became adapted to these changes. Its descendant, the crowned screamer, is now capable of surviving in the savannas of Central South America, while occasionally visiting shallow lakes and rivers.

The crowned screamer is one of the largest flying birds of southern South America, measuring 95 cm in length. Their flat wing measures 60 cm and the tail is 26 cm. They are stout bodied with a disproportionately small head and a "chicken-like" grayish brown bill. The sexes have the same plumage. Their head and upperparts are black with a velvety white "collar" around the base of the neck. Their wings and tail are dark brown and the wing has two sharp spurs at its manus, which are longer than that of their ancestors. The front of their neck, their breast, and their sides are pale gray mottled and streaked with black. Their belly is unmarked white. Their legs and feet are red. Their main characteristic is a crown made up of long white feathers with black tips arising from the nape.

This species feeds on leaves, stems and seeds that it collects in the grasslands of the savannas where it lives. Occasionally, they will also visit shallow lakes and rivers to eat aquatic plants. They usually graze like geese, but can also dig for food. Flocks of up to about 100 forage together in the non-breeding season.

The crowned screamer forms long-term pair bonds that in some cases last for life. Males and females court with mutual preening and duet calling. They build a large nest of sticks and reeds on trees and often nest in about the same location for several years. The typical clutch size is three to five eggs but can be up to seven. Both parents incubate the eggs and care for the young. The incubation period is 43 days, with the chicks leaving the nest immediately after hatching, jumping from the trees. The fleding occurs eight to ten weeks after hatch and the young are independent after about 12 weeks. This species reach sexual maturity with one year and have a lifespan of 13 years.

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ссылка на сообщение  Отправлено: 12.11.22 20:36. Заголовок: JOrnitho Welcome ba..


JOrnitho
Welcome back (after a pause) and thanks for your new good species!

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ссылка на сообщение  Отправлено: 12.11.22 19:59. Заголовок: Good bird. Not very ..


Good bird. Not very interesting or unusal, but realistic.

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ссылка на сообщение  Отправлено: 12.11.22 20:34. Заголовок: лягушка Wow, thanks..


лягушка
Wow, thanks for your participation here! We are still too short of English-speaking participants to develop our English-language version.

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JOrnitho



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ссылка на сообщение  Отправлено: 14.11.22 21:02. Заголовок: лягушка пишет: Good..


лягушка пишет:

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Good bird. Not very interesting or unusal, but realistic.



Thanks! I try to not make an animal that is too unusual because it can end not plausible.

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ссылка на сообщение  Отправлено: 15.11.22 11:45. Заголовок: JOrnitho Unusual do..


JOrnitho
Unusual does not mean impossible, and that's where probability works

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ссылка на сообщение  Отправлено: 15.11.22 20:38. Заголовок: Okay. It's good ..


Okay. It's good direction of describing - I also use it (instead of electric salamander - it's very strange). But I think thar being very strict with that is also not very good - usual species thar likes modern too much are boeing.

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ссылка на сообщение  Отправлено: 16.11.22 12:32. Заголовок: лягушка I think it&..


лягушка
I think it's not bad: I made a social ant-like cockroach, based on real prerequisites to such development.

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ссылка на сообщение  Отправлено: 24.11.22 15:09. Заголовок: I think that the mos..


I think that the most different animal that I proposed was the sea lion-like descendant of the American mink introduced in South America. To make it, I followed the logic of how the pinnipeds evolved from similar animals.
By the way, do you think that there could be a shark being the top predator in the Southern ocean?

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ссылка на сообщение  Отправлено: 24.11.22 16:33. Заголовок: 1)Minks and otters c..


1)Minks and otters can evolve in "pseudo-pinniped" forms, but i think that they'te won's spread wordwidely because of concurention with gannetwhales and orher seal-like beings - it will be small, local group.
2)Why not? A lot of small sharks survived exctinction. I thing some species of Triakidae are best ancestors - they're small, liveable and prosperious in Sourhern hemisphere.
Ps: what happens with me??? This message isn't sending!

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ссылка на сообщение  Отправлено: 24.11.22 21:33. Заголовок: лягушка пишет: Mink..


лягушка пишет:

 цитата:
Minks and otters can evolve in "pseudo-pinniped" forms, but i think that they'te won's spread wordwidely because of concurention with gannetwhales and orher seal-like beings - it will be small, local group.


Yeah, this species is limited to the cold waters of Southern South America.

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Из скромности умолчу.




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ссылка на сообщение  Отправлено: 25.11.22 08:03. Заголовок: JOrnitho пишет: thi..


JOrnitho пишет:

 цитата:
this species is limited to the cold waters of Southern South America


So, don't forget about the existence of this one: http://www.sivatherium.narod.ru/enmammal.htm#pseudolutra_ayapuh_en
Your species must have pronounced ecological differences with this aquatic rodent to evolve and fill its own ecological niche without any competition.

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ссылка на сообщение  Отправлено: 25.11.22 13:00. Заголовок: Автор пишет: Your s..


Автор пишет:

 цитата:
Your species must have pronounced ecological differences with this aquatic rodent to evolve and fill its own ecological niche without any competition.


I'm aware of the ayapuh. This descendant of the mink would be larger and hunt at the open sea, seeking nectonic fish and squids. I was thinking that they would also eat the penguingulls and even the ayapuh, like how sea lions do it with penguins.

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ссылка на сообщение  Отправлено: 24.11.22 22:34. Заголовок: Okay..


Okay

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ссылка на сообщение  Отправлено: 25.11.22 15:33. Заголовок: Good. Ayapuh is "..


Good. Ayapuh is "otter", pinniped mink is "seal".

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ссылка на сообщение  Отправлено: 26.11.22 10:45. Заголовок: лягушка Interesting..


лягушка
Interesting discussion, guys! I agree with JOrnitho.

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ссылка на сообщение  Отправлено: 26.11.22 14:57. Заголовок: Here is the animal&#..


Here is the animal's description:

Lobo-marino (Paraotaria odontoacuta)
During the Holocene, humans had caused several impacts on the environment. Among their actions was the introduction of exotic species. The American mink (Neogale vison) was one of the species that were introduced from their ancestral land in North America to several other continents, among them was South America. These animals were used in the fur industry, but a great number of individuals fled or were released. They were not only capable of surviving the transition of the Holocene to the Neocene, but also to evolve into new species, taking advantage of the demise of other animals to fill their niches.
The lobo-marino is a descendant of the American mink that were introduced to South America. Their name means "sea wolf" in Spanish and was used in the Holocene as a common name of the fur seals. This species is a semi-aquatic predator that has filled the niche left by the sea lions and fur seals. It inhabits Southern South America, from Tierra del Fuego to Northern Chile in the Pacific coast, to Southern Brazil in the Atlantic coast.
These mammals are sexually dysmorphic. The male is larger and more robust than the female. He has an average size of 185 cm, with some reaching nearly 200 cm. The female barely surpasses 160 cm. The male also has long upper canines, which can protrude from the upper lips in older individuals. Their body is elongated and flexible, with a dog-like head with small ears. They have strong jaws with sharp teeth, which are capable of leaving great wounds in their prey. This species has limbs modified into flippers, similar to that of an Otariidae of the Holocene. Like them, the lobo-marino is also more mobile on land. When swimming, these animals use their four flippers to give propulsion underwater. All these characteristics could pass them as a descendant of the pinnipeds, but these are only cases of convergent evolution. The only characteristic that differs from true seals is the presence of a stubby, 15 cm long tail. The pelage is thick and luxuriant, being light tawny on the females and young males, becoming dark brown in older males. Both sexes have pale underparts.
The lobo-marino is carnivorous, feeding on fish, squid and krill. They take long, offshore foraging trips, but sometimes can hunt near the coast. They can also eat seabirds, such as penguingulls, and the rodent Ayapuh. The females and young males prefer to hunt smaller prey, while the adult males hunt mostly the large ones. When hunting penguingulls, the lobo-marino patrols the waters near the breeding colonies, almost completely submerged, waiting for the birds to enter the ocean. It kills the swimming bird by grabbing its feet, then shaking it vigorously and beating its body against the surface of the water repeatedly until the bird is dead. The Ayapuh is killed by these mammals with a bite on their necks. The largest of the males is also capable of killing a newborn algocetus.
While they spend most of their time on the sea, these animals establish territories at the coast where they rest. The males will have a large territory. They are very territorial, fighting fiercely against males that try to invade. These fights can be violent, with deep wounds being left due to their large canines. The females don’t have a fixed territory, being able to move around the territory of the males. They are more sociable, even forming small groups in beaches or rocky areas. Such agglomerations are more common when they have cubs and during the winter. In the winter, the dominant male will occasionally participate in these groups to get warm.
The mating season of the lobo-marino starts at the end of the autumn. During this period, the females will start to reunite in groups to get warmer during the night due to the temperature falling. Such groups are usually formed in the center of the territory of a dominant male. With most of the females together in only one place, the male will come in search of those that are fertile. The male will do it for 3 weeks, copulating with most of the receptive females that he can find. Is during this period that other males that don’t have territories try to approach females, resulting in fights.
The gestation lasts from the end of the autumn to the beginning of the spring. During this period the females disperse in search of safe locations where they can give birth. These places usually are caves or large rock crevices, any place where the females can enter and the predators will not be able to have access to the cubs. Some females can enter estuaries, reaching freshwater in search of such locations. The female gives birth to one or two cubs. They are born with closed eyes that open one day after birth. The ears take a bit longer, opening three days after they are born. The females remain with the cubs for ten days, after that they start to go forage at the sea.
After one month, the pups already are capable of swimming and the mother will guide them out of the den where they were born toward the groups of females that start to form during these periods. Differently of the groups formed during the winter, these are smaller and only have mothers and their pups. While the females go search for food, the young remain together in crèches. Pups are weaned after a year, at this point they are already capable of living alone. If they are female, their mother will tolerate their presence. However, the males are aggressively expelled by the mother, being forced to have an errant life until they are able to secure their own territory in the coast. The sexual maturity of this species is reached with 5 years and they have a lifespan of 36 years. However, few reach this age. Many males are killed in territorial fights, while individuals of both sexes are eaten by large sharks, such as the sea onza

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ссылка на сообщение  Отправлено: 27.11.22 10:35. Заголовок: JOrnitho But lobo-m..


JOrnitho
But lobo-marino is already present in the catalogue, you posted it back in June this year:
http://sivatherium.borda.ru/?1-7-1654509817110-00000014-000-100-0#024

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ссылка на сообщение  Отправлено: 27.11.22 17:09. Заголовок: Биолог пишет: But l..


Биолог пишет:

 цитата:
But lobo-marino is already present in the catalogue, you posted it back in June this year:


My bad! I forgot that I had posted it already, there are too many things in my mind these days.
I'll compensate by thinking in a new species, one that I didn’t post already. Maybe an insular species of deermara? Besides Great Antigua and Fernando de Noronha, there is any other island close to Neocenic South America where such animal could live?

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ссылка на сообщение  Отправлено: 26.11.22 16:58. Заголовок: Very good!..


Very good!

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