There are circulating pictures of a black chicken with black eggs, but all sources checked say the black Ayam Cemani lays cream colored eggs, not black. Thus, the composite image below is misleading.
Black Ayam Cemani chickens are real and the black looking eggs are real eggs, but from an entirely different bird. Which bird?
I started with one of the most dubious web sites, Answers.com. This site has so much bad information that it should be renamed “Guesses.com” in my view. I read Answers.com mainly to see what they get wrong. Here is an image of the Answers.com summary on black egg laying birds.
Honeycreepers are not Cayuga ducks, so without needing to check elsewhere the site’s answer is obviously self-invalidating. Besides, I found not a single image of a black Honeycreeper egg. Answers.com “answers” are wrong so often they are actually a menace to human intelligence, but at least it’s not pure fiction usually, just lazy repeating of what was heard elsewhere. In this case it seems they repeated some false information from 1899.
A commonly repeated, yet false, belief about the various honeycreeper species is that some of them lay black eggs. This idea was first made known in the scientific community with the 1899 publication of Nehrkorn‘s egg catalog; Nehrkorn’s claim was cited in ornithological literature for many years without verification, but by the 1940s it was established that none of the members of Cyanerpes lay such eggs.
This video confirms the Ayam Cemani hatching from creme colored eggs:
What are these black eggs, then? All indications are, these belong to an Emu ( Emu – Dromaius novaehollandiae), and specifically, to a mature one. An Emu breeder had this to say:
“Smaller (Emu) birds, say between the age of 18 months plus, lay normal green colour small eggs. Later, as they grow, they start laying darker, bigger (eggs) with black spots, (that is,) somewhat embossed dark black spots. Sometimes the black spots are so dense that it seems like black egg.”
Not all Emu eggs look black, but some do.
As an aside, there is another place you can find black eggs, or rather regular eggs that turn black:
Owakudani, meaning the Great Boiling Valley, is located in the mountain town of Hakone. One can take an aerial tram up to the hot springs, or walk up the 1 km path. On clear days either route delivers spectacular views of the ominous Mt. Fuji. Once the springs are reached, kuro-tamago, or black eggs, can be purchased five at a time. The eggs are ordinary chicken eggs but the shell turns black due to being boiled in the hot sulfur spring. Local tradition holds that for each black egg eaten, seven years is added to one’s life. However, some say that eating more than two is not recommended.
As for the bird, it looks amazing.
Ayam Cemani is an uncommon and relatively modern breed of chicken from Indonesia. They have a dominant gene that causes hyperpigmentation (Fibromelanosis), making the chicken entirely black; including feathers, beak, and internal organs.
Their beak and tongue, black comb and wattles; even their meat, bones and organs appear black. The blood of the Ayam Cemani is normally colored. The birds’ black color occurs as a result of excess pigmentation of the tissues, caused by a genetic condition known as fibromelanosis. This gene is also found in some other black fowl breeds. The roosters weigh 2–2.5 kg and the hens from 1.5–2 kg. The hens lay cream-colored eggs with a slight pink tint, although they are poor setters and rarely hatch their own brood. Eggs weigh an average of 45 g.
In the past individual birds in the United States of America have been priced at $2500.
Summary: someone wrongly paired a picture of Emu eggs with pictures of Ayam Cemani chickens. This shouldn’t bother me but it does. What you think you see or know, what you think seems obvious, is sometimes not reality. Wrong factually unfounded conclusions destroy lives. Challenge your assumptions.
Humans could use a Renaissance of Reality. Someone had a blog by that title with a funny description:
This is a blog dedicated to helping, anyone it can, to get their heads out of their asses, their neighbors ass, their governments ass, any ass in which a head may reside.
That’s not just a good idea, it may be the only way our species will survive. 🖖