This is not an idiom. A herd is a group of certain animals, like sheep and cows. This phrase just means a group of sheep. You might have heard someone comparing people to a herd of sheep. That is not an idiom, but a simile saying that some people act like sheep.
black sheep
It's the herd mentality...everyone else is doing it, I will too.
None. There are no sheep in a herd of cows.
To take care of sheep, and shear the sheep. Also, to herd sheep. Therefore they are a Sheep herd, or Shepherd.
A herd of unsheared sheep are called unshorn sheep. The sheep are sheared for their pricey wool each year.
The collective noun for crows is murder. Seriously.
The plural of 'sheep' is actually the same - just 'sheep'. So you have one sheep, or ten sheep. Not sheeps. A group of sheep is called a flock or a herd of sheep.
It depends. Are you talking about the herd for example: "A herd of sheep." or do you mean for example: "I heard you back there!" If you are talking about the herd as in a herd of sheep then you spelled it right, if you mean the hearing type of herd then it's: "Heard" instead..
Since the name of a group of sheep is herds. It is asking you to put the sheep into a herd into the grass area.
A group of sheep are a "herd".
A group of sheep is a flock. A group of sheep is a FLOCK
This is not an idiom - it means exactly what it says. When you see the words AS ___ AS ___ then you are dealing with A Simile - this one is comparing something white to the white color of a sheep.