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ссылка на сообщение  Отправлено: 18.05.22 16:06. Заголовок: Fauna of North America


I decided to open a topic for this continent, since it was the only one that remained without one in the foreign section.
I was thinking about the possibility of the snakehead fish and the peacock bass, both introduced species in the USA, surviving in the Neocene. Does it seems plausible? Another animal that could live here is a descendant of the house sparrow. It was also introduced here.

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ссылка на сообщение  Отправлено: 18.05.22 19:30. Заголовок: JOrnitho Thanks for..


JOrnitho
Thanks for the topic!
And good ideas!

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ссылка на сообщение  Отправлено: 19.05.22 03:17. Заголовок: I wonder if the desc..


I wonder if the descendants of the peacock bass could evolve to resist low temperatures and expand North from Florida.

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ссылка на сообщение  Отправлено: 19.05.22 12:04. Заголовок: JOrnitho support lo..


JOrnitho

 цитата:
support low temperatures


You mean "resist"? Seems not very plausible...

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ссылка на сообщение  Отправлено: 19.05.22 14:14. Заголовок: Биолог пишет: You m..


Биолог пишет:

 цитата:
You mean "resist"? Seems not very plausible...


Yes, resist. Then these fish will be restricted to Florida Peninsula and more warm areas.

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ссылка на сообщение  Отправлено: 19.05.22 19:33. Заголовок: JOrnitho OK...


JOrnitho
OK.

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ссылка на сообщение  Отправлено: 03.08.22 17:27. Заголовок: We already talked ab..


We already talked about it before, but I was reading more about the situation of the red-crowned amazon (Amazona viridigenalis) in California and thought that they really have great chances of surviving on this region. In Los Angeles, their population is becoming larger than that in their natural habitat in Mexico. Maybe they could leave descendants in this region, perhaps these Neocenic birds could have the genes of other feral Amazonas of the region: lilac-crowned parrot (Amazona finschi) and yellow crowned parrot (Amazona ochrocephala). It would be the result of hybridization. These birds could stay in the forests of the Pacific coast during summer and migrate to Mexico during winter.

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ссылка на сообщение  Отправлено: 03.08.22 18:03. Заголовок: JOrnitho Thanks for..


JOrnitho
Thanks for the topic.
Yes, the survival of amazons in California (continental, not island) is a good idea! But hybridization is quite unlikely because in holocene the red-crowned amazon in California seems to lack overlappings with the other two you mentioned in order for a stable hybrid to emerge.

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ссылка на сообщение  Отправлено: 03.08.22 18:46. Заголовок: Биолог пишет: Yes, ..


Биолог пишет:

 цитата:
Yes, the survival of amazons in California (continental, not island) is a good idea! But hybridization is quite unlikely because in holocene the red-crowned amazon in California seems to lack overlappings with the other two you mentioned in order for a stable hybrid to emerge.


I see. Then, I think that the red-crowned amazon can be the only ancestor of these birds.

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ссылка на сообщение  Отправлено: 03.08.22 19:34. Заголовок: JOrnitho Yes, why n..


JOrnitho
Yes, why not.

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ссылка на сообщение  Отправлено: 03.08.22 20:52. Заголовок: I was also thinking ..


I was also thinking that this bird could be migratory, flying to California Island and Pacific coast of Mexico during winter. Their summer range would be the forests and woodlands of what once was California, from North to South.

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ссылка на сообщение  Отправлено: 04.08.22 00:19. Заголовок: I made the descripti..


I made the description of the parrot. What do you think?

Lilac-faced parrot (Amazona migratoria)
During the Holocene, the man introduced many species to other continents. Some only because of their ornamental value, while others were introduced because they were useful for agriculture. However, most introductions were those of animals used as pets. The psicittacids were among those that were most introduced, being spread across several continents. The red-crowned parrot (Amazona viridigenalis) was a species that lived in northeastern Mexico and southern Texas. In their natural range, the species was suffering with human pressure and their population decreased. However, some of these birds escaped from their owners and became feral in California. This population grew and thrived, leaving descendants in the Neocene.
The lilac-faced parrot is their descendant, one of the last few representatives of the genus Amazona in the Neocene. These birds are endemic to the forests and woodlands of the region that once was the American state of California. During the winter, these birds migrate to the forests of California Island and of the Pacific slopes of Mexico.
They have 43 cm of length and a wingspan of 86 cm. These birds also have rounded tails and wings. Their plumage is mostly green with the most notable features being a bright red forehead and crown, with blue-lilac faces. Their beak and legs are dark gray.
Their diet consists of seeds, nuts, fruits, flowers and nectar. The lilac-faced parrot has a great preference for pines and the fruits of the oaks. They hold the food with their legs and use their strong beak to break the hard shell.
The lilac-faced parrots are gregarious and monogamous. The pairs will be seen flying close to each other in the flocks that can have 20 to 40 individuals. During their migration, such flocks can have hundreds of birds. When flying to their wintering grounds, the male and female will constantly vocalize to each other. They start to breed in the middle of spring. The female lays 3 to 5 white eggs that can be laid with an interval of three to four days. Females are responsible for the entire incubation period of 28 days, and only leave the nest for short feeding periods. Fledging begins at nine weeks old. Their nests are made inside tree cavities near other members of their flock, creating a breeding colony. They will return to the same cavity every year to raise chicks unless that cavity was previously attacked or they did not have reproductive success there for a different reason. While rare, intraspecific fights can happen if they find the hole already occupied by other parrots. The chicks leave the nest after 60 days, but remain close to their parents during the first migration. Sexual maturity is reached with 5 years and they have a lifespan of 34 years.

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ссылка на сообщение  Отправлено: 04.08.22 11:21. Заголовок: JOrnitho OK, good o..


JOrnitho
OK, good one.

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ссылка на сообщение  Отправлено: 15.08.22 13:46. Заголовок: With the climate bei..


With the climate being warmer in the Neocene, do you think that the eared quetzal (Euptilotis neoxenus) could spread to other areas of North America? Their descendants could live in the Mexican Plateau, Florida and a migratory living in Apalachia.

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ссылка на сообщение  Отправлено: 15.08.22 14:39. Заголовок: JOrnitho Quite poss..


JOrnitho
Quite possible, but the trogons (quetzals) in this case are quite likely to loose their colorful plumage.

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ссылка на сообщение  Отправлено: 15.08.22 15:44. Заголовок: Биолог пишет: Quite..


Биолог пишет:

 цитата:
Quite possible, but the trogons (quetzals) in this case are quite likely to loose their colorful plumage.


Yes. While I believe that the Mexican species and the one in Florida can still be a bit colorful, the one in Apalachia would be pale, with any red being replaced by reddish-brown.

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ссылка на сообщение  Отправлено: 15.08.22 18:20. Заголовок: JOrnitho OK, I agre..


JOrnitho
OK, I agree.

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ссылка на сообщение  Отправлено: 16.08.22 21:14. Заголовок: I finished the descr..


I finished the description of the North American trogon. Do you think that the migratory species could appear in the migration chapter that is being planet? It also cross the Florida Peninsula to reach Great Antigua and close islands.

Appalachian quetzal (Americotrogon appalachiensis)

The human actions during the Holocene caused the decline of many species. However the species that were resilient enough survived, with their descendants now living in the Neocene. The eared quetzal (Euptilotis neoxenus), had not only survived the anthropogenic onslaught, but also expanded their distribution to the North. There this species gave rise to a new Genus, the Americotrogon. The Appalachian quetzal is its type species. An inhabitant of the forest and woodlands of the Appalachian mountains, this bird migrates to Great Antigua and other Caribbean Islands during the winter.

The Appalachian quetzal has 36 cm of length, with a wingspan of 64 cm. Both sexes have dark green backs and reddish brown heads, neck and chest. These birds have iridescent dark blue central tail feathers, and outer tail feathers that are predominantly white. The males have iridescent green feathers in their wing coverts, while the females lack such feathers. The bill is dull gray with a slightly darker band at the tip. Adults males have pale red lower bellies, the females only have some patches of this color in this part of their body. The bill is dull gray with a slightly darker band at the tip, the legs are pale gray.

They feed on insects, small vertebrates, and fruit. Caterpillars, moths, katydids, cicadas, small lizards, and other prey are fed to the young. Like other trogons, they often pluck prey and fruit while hovering. Vertebrates and invertebrates are more hunted when they need to feed their chicks.

Appalachian quetzals are territorial and monogamous. Males will repel other members of the same species and even other hole-nesting species from around their nesting sites. These birds nest in the beginning of the spring, as soon as they return from migration. Males attract females by singing.Like other trogons, they are cavity nesters. Nests are dug with their beaks, into rotting wood or in the soft ground of cliffs. Nest digging is undertaken by the male alone. In the case of nests dug into tree trunks, the wood must be strong enough not to collapse but soft enough to dig out. When seeking a place to make the nest, the male will land on dead tree trunks and slap the wood with their tails, test the firmness.

The nests are usually unlined. Between two and four eggs are laid by the female. These are round and lightly green. Both parents incubate the eggs, with the male taking one long incubation stint a day and the female incubating the rest of the time. The Incubation begins after the last egg is laid. The incubation usually lasts between 16–19 days. On hatching the chicks are altricial, blind and naked. The chicks acquire feathers rapidly, usually in a week. They take 25 days to fledge. The young will follow their parents during the migration, but will return alone. This species don’t form flocks during the migration, with the only groups being that formed by pairs and their chicks. They reach sexual maturity with 2 years and their lifespam is of 21 years.

Another representative of the Genus Americotrogon is the Florida quetzal (Americotrogon flaviventer), an inhabitant of the forests and wooded swamps of the Florida Peninsula. They have 33 cm of length and 58 cm of wingspan. Both sexes have dark green backs and iridescent dark blue tail feathers. The males have bright yellow heads, chests and bellies. In the females these parts of their body are pale yellow. This species isn’t migratory.

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ссылка на сообщение  Отправлено: 17.08.22 09:40. Заголовок: JOrnitho The bird i..


JOrnitho
The bird is good!

 цитата:
the migration chapter that is being planet?


I do not quite understand. You mean the migration is across the whole planet? Like skuas or petrels? But what for?

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ссылка на сообщение  Отправлено: 17.08.22 14:35. Заголовок: Биолог пишет: I do ..


Биолог пишет:

 цитата:
I do not quite understand. You mean the migration is across the whole planet? Like skuas or petrels? But what for?


I mean, I was asking if it could appear in the chapter about the migration of the hummingbird, since this trogon uses a similar route to reach the Antiles and Great Antigua during the winter. I ended typing wrong. It was planed, not planet. Sorry for that.

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ссылка на сообщение  Отправлено: 17.08.22 15:00. Заголовок: JOrnitho It's O..


JOrnitho
It's OK, don't worry. Yes, sure, it can be mentioned/described along with the hummingbird.

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