A young goose is a gosling, A female Goose is a Goose. A male Goose is a Gander. A flock are called Geese. What are a gaggle of females geese called? Gooses or geese. If Geese, how would you know what was there sex. Would one have to write female geese? One cow is a cow. A group of cows are called cows, not female cattle.
A herd of cattle if the sex is not identified or specified. A herd of cows if it is.
A drove of bullocks - young bulls
These group names depend largely on where you're from, how animals are kept. We never describe young bulls as bullocks, nor do we use the term 'drove'. A gaggle of geese also is foreign to us, as usage, [we understand it of course] in my neck of the woods because the only geese we ever see are flocks of wild geese.
Anglika, isn't 'bullocks' also a taboo/swear word in BrE? Is it somehow derived from the young bull usage?
I think that most of the group names had more significance many centuries ago when animals figured more prominently in most people's lives.
Nope - you are thinking of Bollocks which derives from a totally different thing - namely part of the male anatomy.