Vespere ni sidas en la ĝardeno kaj aŭdas la birdojn kanti el la ombro de la malnova arbo.

Vespere means in the evening or during the evening.

The ending -e makes it an adverb. Esperanto often uses adverbs of time like this:

• matene = in the morning
• tage = during the day
• vespere = in the evening
• nokte = at night

So Vespere ni sidas... is a very natural way to say In the evening we sit... or In the evening we are sitting...

You could also say en la vespero, but vespere is shorter and very common.

In Esperanto, the simple present tense often covers both English we sit and we are sitting.

So ni sidas can mean:

• we sit
• we are sitting

The exact nuance comes from context. In this sentence, English would most naturally say we are sitting, but Esperanto does not need a separate continuous form here.

Because this sentence describes location, not movement.

• en la ĝardeno = in the garden / inside the garden
• en la ĝardenon = into the garden

The -n ending is often used when there is movement toward a place. Here, ni sidas tells us that we are already there, sitting in that place, so ĝardeno stays without -n.

Because la birdojn is the direct object of aŭdas.

We are hearing the birds, so birdoj takes the accusative ending:

• la birdoj = the birds
• la birdojn = the birds as a direct object

So:

• ni aŭdas la birdojn = we hear the birds

The -n does not come from kanti. It comes from aŭdas.

Because after verbs like aŭdi (to hear) and vidi (to see), Esperanto often uses object + infinitive.

So:

• ni aŭdas la birdojn kanti = we hear the birds sing / singing

Here, kanti is an infinitive meaning to sing, but in English we usually translate the whole pattern more naturally as hear the birds singing.

This is a very common structure in Esperanto.

Both are possible, but they are slightly different in feel.

• ni aŭdas la birdojn kanti = we hear the birds sing / singing
  This presents the singing as something directly perceived.

• ni aŭdas, ke la birdoj kantas = we hear that the birds are singing
  This is more like hearing the fact or realizing that they are singing.

The version in the sentence is more direct and vivid.

El means out of or from inside.

So:

• el la ombro = out of the shade / from the shade

In this sentence, it suggests that the sound of the birds' singing comes from the shaded area.

Esperanto uses el when something comes out from within an area, space, or group.

Because de shows a relationship like of.

• la ombro de la malnova arbo = the shade/shadow of the old tree

So the phrase means that the shade belongs to, or is cast by, the old tree.

This is a very normal Esperanto way to connect two nouns.

Most naturally, it means that the birds are singing from the shade of the old tree, and we hear that singing from there.

In other words, the birds are probably in the shaded area under or near the tree, and the sound reaches us from that place.

Esperanto does not force a very sharp distinction here between:

• the birds being in the shade, and
• the sound coming from the shade

The context makes the picture clear enough.

Because these are understood as specific things in the scene.

• la ĝardeno = the garden, probably the one we are in
• la birdojn = the birds we can hear there
• la malnova arbo = the old tree, a particular tree in that setting

Esperanto has only one definite article, la, and it works much like English the.

Not completely. Esperanto word order is fairly flexible, because endings show grammatical roles.

But the order here is very natural:

• Vespere = time first
• ni = subject
• sidas ... kaj aŭdas = two actions linked by kaj

The sentence is nicely organized as:

In the evening, we sit in the garden and hear the birds sing...

Because sidas and aŭdas share the same subject ni, Esperanto does not need to repeat ni.

Two sounds may stand out to an English speaker:

• ĝ in ĝardeno sounds like the j in judge
• aŭ in aŭdas sounds roughly like ow in cow

So:

• ĝardeno sounds approximately like jar-DE-no
• aŭdas sounds approximately like OW-das

Esperanto pronunciation is very regular, so once you learn the letters, words are usually pronounced exactly as written.

It can mean either, depending on context.

In this sentence, shade is probably the most natural English choice, because the birds seem to be singing from the dark, sheltered area under the tree.

So:

• la ombro de la malnova arbo could literally be the shadow of the old tree
• but in natural English here, the shade of the old tree may sound better