The Seven Siblings

Question

PREFACE

This is a more lively try on "Where do I want to go next?" riddles, hope you like it!

THE PUZZLE

Hi, here are us, the seven siblings, but one is missing!

The brothers:

A: Let's introduce ourselves without our family name. It's boring to be formal, right?

B: Ok, I'll go first. Yo, I am a tall bird! People always say "Careful your red cap dont hit the sky"!

C: Hey there, those Chinese kids will often mistake me as a turtle!

A: And I am often mistaken with my friend a little bit souther. Do you know...

B: Shut up!

The sisters:

D: Hi there! You know, we are all hands in hands, so I will introduce us all to you.

My younger sister has a starry sky,

But lo! My queen shines alone.

My other sister has a lot of gold,

yet is the smallest and youngest in the trio.

QUESTION

D: To be or not to be, that is the question. JKJK

Now, o my friend, guess who we are, and figure out who our missing brother is!

HINTS

Reminder:

Pay attention to the tags

Hint 1:

Most of us are only introducing our names

Answer 1

I believe the siblings are

countries beginning with the letter U.

A: I am often mistaken with my friend a little bit souther.

This is Uzbekistan, whose name without the family name U sounds similar to Pakistan which is to the south. (edited based on OP's comment)

B: Yo, I am a tall bird! People always say "Careful your red cap dont hit the sky"!

The tall bird is a crane, making the country Ukraine.

C: Hey there, those Chinese kids will often mistake me as a turtle!

The Mandarin word for turtle is 乌龟 (wūguī), which I suppose sounds a bit like Uruguay without the initial U.

The "D" sisters are

Countries beginning with "United". (Hands in hands – get it?)

D1: My younger sister has a starry sky,

United States with its star-spangled flag.

D2: But lo! My queen shines alone.

United Kingdom with her royal highness.

D3: My other sister has a lot of gold, yet is the smallest and youngest in the trio.

The wealthy United Arab Emirates is smaller than both the US and the UK, and became independent last.

The missing brother would then be

Uganda.

Answer 2

I don't have a full solution but enough that I feel comfortable sharing this guess (for the first time on this board!)

The siblings are countries whose names end in "stan" and I think the missing one is Pakistan

Sisters.

The borders of Uzbekistan, Kyrgyzstan, and Tajikistan look like they're "holding hands". Their flags seem to match the clues.

My youngest sister has a starry sky,

The flag of Uzbekistan has a starry sky.

But lo! My queen shines alone.

The flag of Tajikistan has a shiny crown.

My other sister has a lot of gold,

yet is the smallest in the trio.

The flag of Kyrgyzstan has a lot of gold and it's the smallest country by population.

For the brothers, I had to stretch a bit more.

B: Ok, I'll go first. Yo, I am a tall bird! People always say "Careful your red cap dont hit the sky"!

I'm guessing this refers to turkeys, and Turkmenistan.

C: Hey there, those Chinese kids will often mistake me as a turtle!

Kazakhstan has a big border with china and if you squint it looks like a turtle.

A: And I am often mistaken with my friend a little bit souther. Do you know...

Afghanistan and Pakistan are often confused as "middle eastern countries that have a lot of wars." Of these Afghanistan is to the north.

This leaves

Pakistan

as the remaining member.

Answer 3

Well, could be something with (but is totally wrong):

Orion , it has 7 stars, and for thai people it is "Turtle." but…
I found Black Tortoise from Chinese constellations.
Guy "B" fits Vermilion Bird from Chinese constellations?

Maybe it will help someone.