Coloring embryos by injecting dye into eggs before they hatch has been practiced for a number of years. It is done to identify the young of certain hatches or groups. And it makes it easier to observe movements of wild birds (especially water fowl) after they leave the nests.
The process of coloring chicks by injecting dye into the eggs also provides an opportunity to study early feather growth. Juvenile plumage will replace the colored down in about two weeks. As this happens, the dyed background amid new growing feathers provides a constantly changing pattern.
While it is possible to inject eggs from about the 10th to 19th days of incubation, the period from the 11th to 14th days appears to be ideal. Only one treatment is necessary if the injection is done at this time. When injections are made after the 14th day the color usually remains localized because the embryo occupies most of the egg; so it may be necessary to inject the egg in more than one place.
Harmless vegetable dyes, such as food coloring dyes sold in grocery stores, work very satisfactorily.
This does not harm the chicks in any way, and eventually as they mature their adult feathers push through and they develop normally with their standard coloured feathers.
I know I’ve probably reblogged this before because it irks me to living hell that ANYONE wold believe that ink is injected into chicken embryos. If they even began to understand how delicate an embryo that is housed within a physical shell would know right off that it’s impossible to do so.
What happens with these chicks, is that they are COMPLETELY submerged in a dye anywhere from a few hours to a day before the event. When I was little a local feed store would sell chicks of all these same colors right around Easter. The problem was that the chick usually died not long after from them inhaling the dye and them getting lung infections and dieing! The owner eventually stopped the practice and now only sells natural colored ones (kinda like the white ones in the video above). Chances are, by looking closely at the chicks, they too were completely submerged into a dye. The beaks are a lighter color than the bodies because the dye can’t completely absorb into the caraton the beak is made of.
Also if you look at the video before pressing play, there is a blue chick that isn’t completely dyed. It’s a mixture of white and blue, which means the color didnt stick, or it was on top when the basket was dipped into the dye and it was lucky enough not to become submerged.