Noću se na stablu često čuje sova.

Noću means at night or during the night.

It is not the ordinary noun form noć (night), but a fixed adverbial form used to talk about time. In other words, here it functions like an adverb, not like the subject or object of the sentence.

A useful comparison is:

• noć = night
• noću = at night

So in this sentence, Noću sets the time frame for the whole statement.

Here se is not really the same as English self. It is a very common Croatian clitic used in several constructions, and in this sentence it helps create a passive-like / impersonal meaning.

Compare:

• Netko često čuje sovu. = Someone often hears an owl.
• Često se čuje sova. = An owl is often heard / You can often hear an owl.

So se removes the need to name the hearer and shifts attention to the sound itself.

It is best understood as a passive-like reflexive construction. Many grammar books call this a reflexive passive or something similar.

Literally, čuje se sova is close to an owl is heard, but in natural English that often becomes:

• an owl can be heard
• you can hear an owl

So yes, it behaves somewhat like a passive, but Croatian often uses se instead of a separate passive form in everyday language.

Because in this construction, sova is the grammatical subject of čuje se, so it appears in the nominative.

Compare:

• Netko čuje sovu. = Someone hears an owl.
  Here sovu is the direct object, so it is in the accusative.

• Čuje se sova. = An owl is heard / You can hear an owl.
  Here sova is treated like the subject, so it is nominative.

This is one of the biggest differences English speakers notice in this kind of sentence.

Because sova is singular, and the verb agrees with it.

• sova = singular
• čuje = 3rd person singular present

If the noun were plural, the verb would also be plural:

• Noću se na stablu često čuju sove. = At night, owls are often heard in the tree / on the tree.

So even though the sentence feels impersonal in English, Croatian still shows agreement with sova.

Na stablu is in the locative singular.

The noun is:

• stablo = tree

After na, Croatian uses:

• locative for location: na stablu = on/in the tree
• accusative for movement toward a place: na stablo = onto the tree

So here na stablu means the owl is located there, not moving there.

Because Croatian and English do not always match prepositions exactly.

With trees, Croatian often uses na where English may prefer in, especially when something is on the branches or perched there. So:

• na stablu can correspond to English in the tree
• it can also sound like on the tree, depending on context

The important point is: do not translate na word-for-word every time. Learn the whole phrase na stablu as the natural Croatian expression here.

Croatian word order is much more flexible than English word order, and it is often used to manage emphasis and information flow.

In this sentence:

• Noću comes first to set the time
• se comes very early because it is a clitic, and clitics usually go in second position
• sova comes late, which makes it sound like the important new information

So the sentence is structured a bit like:

• At night, on the tree, you can often hear — an owl.

Other word orders are possible, but they may change the emphasis. Croatian speakers often move parts around more freely than English speakers do.

Because that is often the most natural English way to express this Croatian pattern.

Croatian čuje se sova literally matches something like:

• an owl is heard

But in normal English, that can sound stiff. So translators often choose:

• an owl can be heard
• you can hear an owl

The idea is not that Croatian has a hidden word meaning can here. It is just that the se construction often expresses general perceptibility, and English usually handles that with can.

Because Croatian has no articles.

So sova can mean:

• an owl
• the owl

The context tells you which meaning is intended.

In an isolated sentence like this, English will often choose an owl, because the owl is being mentioned as a general example rather than as a specific, already known owl.