The same as any other color of parakeet. Large millet seeds, canary seeds and small sunflower seeds. Also, vegies and cuttlebone for calcium. You can find the right mix for them in any pet store.
No parakeets CAN NOT eat spinach !!
parakeets are naturally vegetarians, but they sometimes eat small insects
Yes, Parakeets can eat berries.
yes. parakeets can eat worms. i am currently owning a parakeet and have for 70 years. i am an avian vet and have great looking birds. parakeet can eat worms but it is not part of their main diet, pellets and seeds and greens, such as lettuce, celery and fruits such as strawberries, and grapes, are much better for them, also parakeets don't like meat much so don't try feeding them worms to often.
Depending on your Parakeets color, it's perfectly normal for parakeets to not have blue on it's head...
my parakeets eat wheat that's in their bird seed so parakeets do.
Parakeets are technically omnivores, but the animal-derived food that they normally eat is the occasional insect. It's not common for them to eat meat. It is possible for a parakeet to eat its own young but it is not likely. An inexperienced parent bird may kill its chicks but it probably will not eat them.
yes
Bluebirds, Blue Jays, and certain Parrots, and Parakeets can be blue.
Yes. They can.
No, Parakeets only eat Fruits, Seeds, Viggies and some may have some nectar from flowers. They are Herbivorous.
In short, yes. The key is can those two specific blue parakeets get along. Color doesn't matter, but the two parakeets personalities may clash. If you have had a parakeet for a long time, he may not take kindly to an intruder. Often if you have three, two will bond and pick on the outsider. It is really about the individual birds not the color.