Jogoo ni kuku dume, na hupiga kelele alfajiri.

They are very close in meaning, but not used in exactly the same way.

• jogoo = rooster / cock
• kuku dume = male chicken

So the first part, Jogoo ni kuku dume, is defining the word jogoo by classifying it: a rooster is a male chicken.

This is a very natural pattern in Swahili:

• X ni Y = X is Y

So the sentence is not being repetitive for no reason; it is explaining what kind of animal a jogoo is.

Ni is the basic Swahili linking word meaning is / are in sentences like this.

So:

• Jogoo ni kuku dume = A rooster is a male chicken

It connects the subject (jogoo) with a noun phrase (kuku dume).

A useful thing to remember: ni does not change for singular or plural here.

• Jogoo ni kuku dume
• Majogoo ni kuku dume

In both cases, ni stays the same.

Swahili normally does not use articles like English a, an, and the.

So jogoo can mean:

• a rooster
• the rooster
• rooster(s) in a generic sense

The exact meaning comes from context.

In this sentence, the meaning is probably generic, like a dictionary or science-style statement:

• A rooster is a male chicken, and it makes noise at dawn.

Because in Swahili, the main noun usually comes first, and words that describe or narrow it often come after it.

So:

• kuku dume = male chicken
• kuku jike = female chicken / hen

Here, kuku is the noun, and dume tells you what kind of chicken it is.

English often puts this kind of information before the noun, but Swahili commonly puts it after.

Dume is mainly used for a male animal.

So:

• kuku dume = male chicken
• mbwa dume = male dog
• simba dume = male lion

For human beings, you would normally not use dume as the ordinary word for man. For a human male, words like mwanaume are more appropriate.

So for learners, a safe rule is:

• dume = male animal
• jike = female animal

Hu- marks a habitual or general action.

So hupiga kelele means something like:

• usually makes noise
• habitually makes noise
• makes noise as a general fact

That fits this sentence well, because it is talking about what roosters generally do.

By contrast, anapiga kelele would more naturally suggest:

• he/it is making noise
• he/it makes noise in a more immediate or specific sense

So:

• Jogoo hupiga kelele alfajiri = roosters crow / make noise at dawn, generally
• Jogoo anapiga kelele sasa = the rooster is making noise now

Also, the hu- form does not use the usual subject prefix in the same way, which is why you see hupiga, not something like anapiga here.

Yes, literally kupiga often means to hit / strike / beat, and kelele means noise. But together, kupiga kelele is a normal expression meaning:

• to make noise
• to shout
• to cry out
• in the case of a rooster, often to crow

This is a good example of how Swahili uses many common verb + noun combinations idiomatically.

So in this sentence, the most natural English meaning is probably:

• to crow at dawn

even though the Swahili words themselves are broader than that.

Because time expressions often come after the verb phrase in Swahili.

So:

• hupiga kelele alfajiri = makes noise at dawn

This word order is very natural.

You can sometimes move time expressions for emphasis, for example:

• Alfajiri, jogoo hupiga kelele

But the version in your sentence is the most straightforward and common order.

Swahili often uses time words directly, without a separate preposition like English at.

So:

• alfajiri = at dawn / dawn time
• asubuhi = in the morning
• usiku = at night

That means hupiga kelele alfajiri is perfectly normal without adding anything before alfajiri.

English needs at dawn, but Swahili can just say alfajiri.

Here, na means and:

• Jogoo ni kuku dume, na hupiga kelele alfajiri.
• A rooster is a male chicken, and it makes noise at dawn.

But na has other uses in Swahili too. It can also mean things like with, and it appears in other structures as well.

In this sentence, though, it is simply joining two statements:

1. Jogoo ni kuku dume
2. hupiga kelele alfajiri

It is most naturally understood as a general statement.

Why?

• Jogoo ni kuku dume sounds like a definition.
• hupiga kelele uses the habitual hu-, which often describes general behavior.

So the overall sense is:

• A rooster is a male chicken, and it crows at dawn.

In another context, jogoo could mean a specific rooster, but this sentence strongly sounds like a general fact.

The plural of jogoo is majogoo.

So you could say:

• Majogoo ni kuku dume, na hupiga kelele alfajiri.

That means:

• Roosters are male chickens, and they make noise at dawn.

Notice a few things:

• ni stays the same
• kuku stays the same
• hupiga can also stay the same in this kind of general/habitual statement

So the sentence changes very little.

A few helpful pronunciation points:

• j in jogoo sounds like English j in jam
• g in jogoo is always a hard g, like in go, never like g in giant
• Swahili vowels are usually pronounced clearly and consistently:
  • a as in father
  • e as in bed but cleaner
  • i as in machine
  • o as in go but without a glide
  • u as in rule

Rough guides:

• jogoo = jo-GO-o
• kelele = ke-LE-le
• alfajiri = al-fa-JI-ri

In Swahili, stress is usually on the second-to-last syllable, which is why you hear:

• jo-GO-o
• ke-LE-le
• al-fa-JI-ri