White storks: Ukraine's favourite birds and their journey to Africa

Tests: 5 of 11 right · Exam: 0 of 4 right · Kind: plain · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 375 of the biology course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · wrong ✗

Count them: four stork chicks poke their heads over the nest. How many beaks and legs?

1. 4 beaks and 16 legs — ← Mova's choice · no support
2. 4 beaks and 4 legs — no support
3. 8 beaks and 8 legs — no support
4. 4 beaks and 8 legs — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 2 · wrong ✗

Count them: a stork pair and their 4 chicks are on the nest. How many birds?

1. 5 — ← Mova's choice · no support
2. 8 — no support
3. 6 — ✓ the right answer · no support
4. 4 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 3 · right ✓

Count them: a stork flies about 10,000 kilometres to Africa and the same back. How far in a year?

1. About 20,000 kilometres — ← Mova's choice · ✓ the right answer · no support
2. Only about 10,000 kilometres — no support
3. Only about 5,000 kilometres — no support
4. About 100,000 kilometres — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 4 · right ✓

In the cartoon Dumbo, a stork flies a baby elephant to its mother in a bundle. What is right?

1. Storks bring only human babies — score 2
2. Only circus babies come by stork — no support
3. Babies grow inside their mothers; the stork story is an old tale — ← Mova's choice · ✓ the right answer · score 4
4. Storks really do carry baby elephants and other big babies to their mothers — score 3

Why: It took the question to ask which statement is true. It chose option 3 with score 4, against 3 for the next best. Its support: lesson 375, line 7: «Babies grow inside their mothers; the stork that delivers babies is an old European tale, perhaps because storks live close to people and return to the same ne…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same action «grow» (+1). · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

«my nan says storks never nest by a house of quarrels lol» What is this?

1. A scientific fact about storks that was proved long ago — no support
2. A law in Ukraine — ← Mova's choice · score 9
3. A rule storks learn at school — no support
4. An old saying people tell, not something proved — ✓ the right answer · score -2

Why: It took the question to ask what it is done to. It chose option 2 with score 9, against -2 for the next best. Its support: lesson 375, line 6: «The white stork, leleka in Ukrainian, stands for home and spring, and Ukraine has tens of thousands of pairs, one of the biggest numbers in Europe; old people…», reached through the remembered sentence the question matched. What matched: the same action «nest» (+5); the same doer «storks» (+2); the same circumstance (+2). The right option, 4, scored -2. · the question and its options parsed, with trees and pragmatics

Test 6 · right ✓

«that stork is dead silent, it must be ill» What is more likely?

1. Silent storks are always sick and should be taken to a vet at once — score 1
2. It lost its voice from cold — score 2
3. It is a toy stork — score 2
4. White storks are almost silent and clatter their bills instead — ← Mova's choice · ✓ the right answer · score 5

Why: It took the question to ask which statement is true. It chose option 4 with score 5, against 2 for the next best. Its support: lesson 375, line 8: «White storks are almost silent and clatter their bills to greet each other, while chicks hiss and mew before they learn to clatter.», reached through the same lesson line as the sentence the question matched. What matched: the same action «clatter» (+4); the same thing acted on «bills» (+1). · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

What would happen if all the wet meadows near a village were drained and paved?

1. The storks would find more food in the gutters and the bins — score 4
2. The storks would eat concrete — score 3
3. Nothing would change for storks — no support
4. The storks would lose their frogs and worms and could leave — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask what happens next. It chose option 4 with score 6, against 4 for the next best. Its support: lesson 366, line 7: «Only a few thousand shoebills are left in the wild because swamps are drained and eggs are taken, and despite their scary stare they are shy birds.», reached through what followed the sentence the question matched. What matched: the same action «leave» (+6). · the question and its options parsed, with trees and pragmatics

Test 8 · right ✓

Why is soaring cheaper for a big bird than flapping?

1. Big birds cannot flap at all — score 1
2. Soaring is faster than any plane, so it saves time on the journey — no support
3. Rising warm air lifts it, so it hardly beats its wings — ← Mova's choice · ✓ the right answer · score 3
4. Flapping makes storks lighter — no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 3, against 1 for the next best. Its support: lesson 375, line 4: «In autumn they fly about 10,000 kilometres to Africa, soaring on rising warm air instead of flapping. Warm air hardly rises over cold sea, so Ukrainian storks…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «warm air» (+3); the same property (+2). Against it: a different action (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

«why would a stork pee on its own legs, gross» What is the reason?

1. It does it by accident — ← Mova's choice · no support
2. It is washing its feathers — no support
3. It is marking the nest so other storks keep away — no support
4. The drying liquid cools its blood on hot days — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

What would happen if a big rubbish dump near a stork route closed?

1. Storks would start eating rubbish at sea — score 1
2. Storks that ate there might start flying to Africa again — ✓ the right answer · score 1
3. All storks would die at once — no support
4. Storks would stop flying at all — ← Mova's choice · score 7

Why: It took the question to ask what happens next. It chose option 4 with score 7, against 1 for the next best. Its support: lesson 359, line 14: «Growth plates near the ends of bones are where the bones grow longer; they show as dark lines on an X-ray and close in the late teens, after which you stop get…», reached through what followed the sentence the question matched. What matched: the same action «stop» (+6); a different doer (counts against) (+1). The right option, 2, scored 1. · the question and its options parsed, with trees and pragmatics

Test 11 · wrong ✗

Besides an African spear, what other clue could prove where a stork spends winter?

1. The colour of its eggs — no support
2. A tracker or a ring found on the bird in Africa — ✓ the right answer · no support
3. Its feathers turning darker in the hot African sun — no support
4. How loud it clatters — ← Mova's choice · score 5

Why: It took the question to ask who or what does it. It chose option 4 with score 5, the only option with support. Its support: lesson 375, line 13: «In 1822 a stork in Germany was found with an African spear in its neck; it helped prove storks spend winter in Africa, when some people thought birds slept in…», reached through the remembered sentence the question matched. What matched: a different action (counts against) (+3); it fills the role the question asks for (+2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the principal reason for which white storks of Ukraine circumvent the Black Sea rather than traverse it.

1. Rising warm air, on which they depend for soaring, scarcely forms over cold water — ✓ the right answer · score 3
2. The direct route is the longer — no support
3. The sea is inhabited by large predators which seize storks as they pass over it — score 2
4. Storks are incapable of flight in humid air — ← Mova's choice · score 4

Why: It took the question to ask which statement is true. It chose option 4 with score 4, against 3 for the next best. Its support: lesson 375, line 11: «Storks soar on rising warm air called thermals, which hardly form over cold water, so soaring costs them far less energy than flapping.», reached through the option's own match among the sentences about the question's things. What matched: the same place «rising warm air» (+4). The right option, 1, scored 3. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Select the response consistent with the established facts concerning the incubation of eggs by the white stork.

1. The female alone incubates the eggs — ← Mova's choice · score 3
2. The eggs are left to be warmed by the sun — score 3
3. The eggs are incubated by sparrows — score 3
4. Both parents incubate the eggs in turn — ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 1 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 330, line 5: «Stick insects rock like twigs in the wind so hunters ignore them, they eat leaves such as bramble or privet, and many pet stick insects lay eggs that hatch wit…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «eggs» (+2); the same action «hatch» (+1). The right option, 4, scored 3. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Which of the following statements most accurately characterises the discovery made in Germany in the year 1822?

1. Storks were shown to deliver infants — ← Mova's choice · no support
2. Storks were shown to cross the sea directly — no support
3. A stork bearing an African spear demonstrated that storks winter in Africa — ✓ the right answer · no support
4. Storks were found to hibernate in the mud at the bottom of ponds — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Ascertain the function of the white deposits observed upon the legs of a white stork in hot weather.

1. They are remnants of eggshell — ← Mova's choice · no support
2. They are a disease of the skin — no support
3. They are dried urine, whose evaporation cools the blood — ✓ the right answer · no support
4. They are paint applied by farmers — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/375-white-storks-ukraine-s-favourite-birds-and-their-journey-to-africa/