This Paraphile Can't Stop Scrolling!

Flamingos can survive in low oxygen, high altitude, high temperatures, low temperatures, high alkaline, they can and will drink boiling water and they can be completely frozen at night and still get up the next morning

(animal death) this is a real undoctored photograph (*though the body was stood up for the shot) of a dead flamingo on the surface of lake natron, a lake so salty and so alkaline that it’s naturally carbonated like soda and would eat through your stomach lining if you drank from it.

When this photo went viral years ago, most people assumed this poor flamingo must have been killed by the lake.

It is actually the lake where 75% of its global population are hatched. This is a photo from the same lake:

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Flamingos can survive in high altitudes, hypersaline conditions, and caustic lakes.

Source: ‘All flamingo species have evolved to live in some of the planet’s most extreme wetlands, like caustic “soda lakes”, hypersaline lagoons or high-altitude salt flats.’

They can survive water so alkaline it burns human skin.

Source: ‘More than a million lesser flamingos breed in Tanzania’s Lake Natron, for instance, a lake fed by hot springs with water so alkaline that it can strip away human skin (one pioneering flamingo researcher named Leslie Brown spent months in Nairobi General Hospital after burning his legs wading out to observe where the birds nested).’

They can drink water at near-boiling temperatures.

Source: ‘They can drink water at near boiling point to collect freshwater from springs and geysers at lake edges. If no freshwater is available, flamingos can use glands in their head that remove salt, draining it out from their nasal cavity.’

The lakes they inhabit can freeze overnight, and the flamingos can survive once it thaws in the morning.

Source: ‘The birds may seem to epitomize the tropics, but they also live in the Andes, 15,000 feet above sea level, where they rest on lakes that freeze around them overnight.

“You’ll see them sitting there like snowballs, frozen on ice,” Dr. Arengo said. “And as the temperature warms up, they thaw out, fluff themselves up and go about their business.”’

The photo is indeed from Lake Natron, taken by photographer Nick Brandt. The content of the lake chemically preserves animal corpses that die there. You can see more photos of this here.

It is also true that 75% of Lesser Flamingos are hatches on Lake Natron.

Source: ‘The lake’s landscape is surreal and deadly—and made even more bizarre by the fact that it’s the place where nearly 75 percent of the world’s lesser flamingos are born.’

Some species of Flamingo eat cyanobacteria or algae.

and then one without the words

An interesting paper (Vermeij, 2015) on the "empty phenotypic space", i.e. the forms and adaptations that we do not see in the living world, possibly relevant to the convergence vs. contingency debate.

Some examples:

Wheels: some curled-up arthropods can roll around, and bacterial flagella and some parts of weevil legs rotate on their axis, but macroscopic wheels with a free axle do not exist, probably because smooth surfaces on which they'd be useful are rare and it would be difficult to grow them through embryonal development.

Animal-provided pollination and dispersal do not exist in water, with the possible exception of one species of fish-pollinated seagrass (which is a descendant of terrestrial plants). Presumably water is already good enough at carrying gametes and propagules that buying the services of an animal is a useless expense.

Mineral reef-building does not occur on land nor, more surprisingly, in freshwater. The reason for the latter is not clear, since there are enough mineral ions in freshwater to build shells. Boring of rock, shells, and wood in freshwater is also extremely rare though common in the sea.

Gelatinous plankton like salps or jellyfish (with few exceptions of the latter) is also not found in freshwater, probably because they can't survive dispersal between separate water bodies.

Endothermy ("warm blood") is generally not found in small aquatic animal, probably because water leeches away heat much faster than water, so aquatic endotherms (tunas, sharks, seals, whales) need to be bulky. On land, however, endothermy is found among tiny vertebrates and even insects.

There is no passive air-floating plankton, since air is not dense enough to support living tissue or dissolved organic matter by buoyancy. For that reason filter-feeding is also rare outside of water, while carnivorous plants are not found in the ocean (the water already carries enough nutrient). Aquatic plants do not produce wood as buoyancy is enough to keep them upright.

Large terrestrial animals do not specialize as scavengers (all mammals famous for scavenging also hunt actively); large carcasses are too spread out. All specialist scavengers on land are either very small, or flying.

Herbivory is rare among active fliers, because plant matter has a low energy density and takes a long time to digest. Herbivorous birds and insects are poor fliers or flightless, and the best fliers, like geese, are the ones that can take shelter in water.

Many more examples are only excluded from specific groups (e.g. live-bearing, despite being very common in reptiles, never appeared in birds, probably because the bird egg-shell is too mineralized to be retained in the womb as transition toward full live-bearing).

Even though the author calls them "forbidden phenotypes", only some of them are actually impossible (because they cannot evolve in the first place, or because they cost more energy than they're worth), and others simply never happened to evolve. At the end of the paper there is a list of phenotypes that would have been "forbidden" in the aftermath of the Cambrian Explosion and Ordovician diversification, but which appeared later, and they include

cutins, suberins, lignins, flavonoids, alkaloids, vascular systems, roots, leaves, rigid frameworks of stems and branches, nutrition complemented by animal matter, and basal growth in land plants; nitrogen-fixing symbiosis on land; animal-mediated dispersal/pollination; silk-producing, sound-emitting, flying, eusocial, terrestrial herbivorous, wood-boring, terrestrial shell-bearing and endothermic animals; embryos nourished within the body of an animal or plant parent; mineralized phytoplankton; and rock-excavating marine herbivores. [...] photosymbiotic and chemosymbiotic molluscs, the bivalved condition in gastropods, terrestrial life in gastropods and vertebrates, complex septa within the phragmocone of externally shelled cephalopods, internalization and loss of the shell in cephalopods, cementation to the substratum with a glue of calcium carbonate and organic matrix in several animal groups (gastropods, brachiopods, bivalves and barnacles), spines on shells of several groups (brachiopods, bivalves and brachiopods), mineralized tubes in polychaete annelids, mobility in bryozoans and pelmatozoan echinoderms, jaws and teeth in vertebrates, and vascular systems in brown and red algae. A vast diversity of potent venoms also lay in the future as part of the defensive and aggressive arsenal of many gastropods, cephalopods, aculeate Hymenoptera, vertebrates and land plants.