Тихая охота закончилась, и мы перебираем лисички.

Yes. Тихая охота is a set expression in Russian. Literally it means quiet hunting, but it commonly refers to mushroom picking / mushroom foraging.

The idea is that you are hunting for mushrooms in the forest, but unlike normal hunting, it is quiet: no guns, no chasing animals, just looking carefully.

So for a learner, it is useful to remember тихая охота as an idiom, not just as a random adjective + noun combination.

Because the verb agrees with охота, and охота is a feminine singular noun.

In the past tense, Russian verbs change for:

• gender in the singular
• number

So:

• закончился = masculine singular
• закончилась = feminine singular
• закончилось = neuter singular
• закончились = plural

Since the subject is тихая охота, the correct form is закончилась.

Because the sentence describes two different time points in a natural sequence:

• first, the mushroom-foraging ended
• now, we are sorting the mushrooms

So the meaning is essentially:

• The mushroom hunt is over, and now we’re sorting the chanterelles.

This switch of tense is completely normal in Russian, just as it is in English:

• The trip ended, and now we’re unpacking.

Here перебираем means something like:

• sorting through
• picking over
• checking one by one

When talking about mushrooms, berries, beans, etc., перебирать often means going through them carefully:

• removing bad ones
• cleaning them
• separating them
• checking them one by one

So this is more specific than just holding or moving them. It suggests careful manual sorting.

The verb перебирать is the imperfective form. That makes sense here because the action is presented as:

• ongoing
• in process
• not viewed as a completed whole

In this sentence, the speakers are in the middle of sorting the mushrooms, so imperfective is the natural choice.

If you used a perfective form, it would normally focus on the action as completed or as a single whole event, which is not the point here.

Yes, лисичка can mean either:

• little fox
• chanterelle mushroom

Context tells you which meaning is intended.

In this sentence, because we have тихая охота and перебираем, the meaning is clearly chanterelles. People sort mushrooms after collecting them; they do not normally say this after hunting little foxes.

This kind of double meaning is very common in Russian vocabulary, and context usually makes it clear.

Here лисички is in the accusative plural, because it is the direct object of перебираем.

We are sorting what?

• лисички

For inanimate plural nouns, the accusative plural is usually the same as the nominative plural. So:

• nominative plural: лисички
• accusative plural: лисички

That is why the form looks the same.

Yes, Russian could leave it out:

• ...и перебираем лисички

That would still be grammatical, because the verb ending -ем already shows we.

But Russian often includes pronouns when the speaker wants:

• a clearer subject
• a little emphasis
• a more natural flow in context

So мы is not required, but it is perfectly normal.

Because и is joining two independent clauses, each with its own verb:

1. Тихая охота закончилась
2. мы перебираем лисички

In Russian, when и connects two full clauses, a comma is normally used.

Compare:

• Мы пришли домой, и я сразу лег спать.

But if и only connects two words or short parts inside one clause, there is usually no comma:

• мама и папа
• собрали и почистили грибы

Yes. Russian word order is flexible, although each version can sound slightly different in emphasis.

The given version is very natural:

• Тихая охота закончилась, и мы перебираем лисички.

Other possible arrangements might shift the focus a little, for example:

• Тихая охота закончилась, и лисички мы перебираем.
  This puts more emphasis on лисички.
• Закончилась тихая охота, и мы перебираем лисички.
  This is possible, but a little more stylistically marked.

For learners, the original order is the safest and most neutral one to remember.