They are more aggressive than some other longtail fowl, yes.
Some chicks eat hay without having a problem their entire life, however, for others it is a deadly experience. This could mean an impacted crop.
; straight run : Chicks that are sold without being sexed first, i.e., male and female mixed together. In theory, a straight run of chicks will give you 50% of each gender, but it doesn't usually work out that way.
If you mean "mammals", then no; Chickens have no mammary glands, and so they are not mammals.
Most of us farmers are not mean to our chickens. We love our chickens and take care of them as well as our dogs and cats and all our farm animals. If you mean chickens raised for egg and meat production, then it might seem mean to some people but those birds are considered a commodity and are raised specifically to feed humans growing demand for meat and eggs. The people who work there focus on the end product and try to do their jobs as efficiently as possible. There are exceptions to to this and some people are mean but they usually do not stay in business long.
I am assuming you mean the red things hanging under the "chin" of the hen. Yes, they are called wattles, the puffy red things on the top of the head are called combs. Both these features can be single or double.
I believe you mean 'when do chickens become broody'. If this is what you mean it is usually in the Spring/Summer months that a chicken would like to hatch chicks. Although, not all chickens enjoy broodiness. Silkies, bantams and Orpingtons etc like hatching chicks.
This is a funny thing. Yes, chicks do this to take a dirt bath. Chickens will take a dirt or dust bath to rid themselves of bugs, ticks and the creepy crawly creatures.
Do you mean 'can'? Yes. Chickens are eaten by them in the wild all the time, and many owners feed theirs chicks and chickens, zebra finches (though I don't know how because they're so expensive), and others.
Haching is not a word. However, if you mean hatching, that is the act of being born from an egg. For example, chickens lay eggs, and from those eggs chicks are born, thus beginning the cycle.
if you mean "chick" like a young bird, it's "polluelo" if you mean a young chicken, it's "pollito" if you mean a girl, it's "chica"
Some chicks eat hay without having a problem their entire life, however, for others it is a deadly experience. This could mean an impacted crop.
Much of this depends on the breed, game chickens tend to be more aggresive. Chickens, like people, have individual personalities. You should never assume that ,because it is a certain breed, your chicks will be safe. Ideally, you would want to keep the roosters separate. If you must keep the rooster in the cage with the chicks I would recommend watching them closely for the first few days. Also , if a hen hatched the chicks she will most likely defend them.
If this question is correct in chickens category, no. If you mean chicks that are naked and in a nest - yes, they should be closed for the first 5-10 days depending on species.
If you mean the University of Phoenix, it is an online school. If you mean any other school with Phoenix in its name, I would assume it is in Phoenix, Arizona.
It sounds like you want to get rid of chicks. Do you really mean "How to get rid of fleas on chicks?" If so, then ask the question.
I don't get what you mean by this question.
There has to be a rooster around to get any chicks out of the eggs.