---
title: Eagles: golden eagles, harpy eagles, Steller's sea eagles and eagle… — how Mova does on the tests · Biology
description: Lesson 323 of the biology course of Mova's primary school: 4 of 11 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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# Eagles: golden eagles, harpy eagles, Steller's sea eagles and eagle eyes

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**Tests:** 4 of 11 right · **Exam:** 1 of 4 right · **Kind:** plain · **Understood:** 10 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 323 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](https://md.mova.elamur.ai/free/en/corpora/school/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/).

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Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/).

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### Test 1 · wrong ✗ {#t1}

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«saw a vid of an eagle grabbing a toddler in a park, crazy» What is the best reply?

- **1.** True, but only bald eagles — **← Mova's choice** · score 3
- **2.** True, eagles do it all the time — score 2
- **3.** That famous video was a computer fake; eagles cannot lift a child — **✓ the right answer** · score 1
- **4.** It was real, the child was on holiday and the eagle let go over a lake — no support

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 3, against 2 for the next best. Its support: lesson 323, line 11: «The wild scream given to bald eagles in films is usually the call of a red-tailed hawk; a real bald eagle gives weak, high chirps.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «real bald eagle» (+2); the same property (+1). The right option, 3, scored 1. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t1/)

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### Test 2 · wrong ✗ {#t2}

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Count them: 2 golden eagles land on a rock. How many talons on all their feet?

- **1.** 10 — **← Mova's choice** · no support
- **2.** 8 — no support
- **3.** 16 — **✓ the right answer** · no support
- **4.** 20 — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t2/)

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### Test 3 · wrong ✗ {#t3}

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Count them: an eagle grips a fish with both feet. How many talons point backwards?

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

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t3/)

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### Test 4 · wrong ✗ {#t4}

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In a film a bald eagle opens its beak and lets out a wild scream. What is the truth?

- **1.** Bald eagles scream louder than any other bird, so the film is right — no support
- **2.** Eagles cannot make any sound — **← Mova's choice** · score 1
- **3.** The sound is usually a red-tailed hawk; bald eagles chirp — **✓ the right answer** · no support
- **4.** The sound is a real eagle in pain — no support

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 1, the only option with support. Its support: lesson 78, line 5: «Bald eagles fell to about 400 to 500 nesting pairs in the lower 48 US states by the 1960s, partly because the pesticide DDT, building up from tiny water bugs i…», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+3); the same doer «bald eagles» (+2). Against it: a different thing acted on (counts against) (-1); one says «not», the other does not (counts against) (-3). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t4/)

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### Test 5 · right ✓ {#t5}

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In The Lord of the Rings giant eagles carry people over mountains. What can a real big eagle usually carry?

- **1.** Only a few kilograms — **← Mova's choice** · **✓ the right answer** · score 3
- **2.** A small horse or a cow — no support
- **3.** A car, if it is light — no support
- **4.** A grown person easily — no support

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 3, the only option with support. Its support: lesson 323, line 4: «Eagles also fill films and stories with myths: the screaming «eagle» call is usually a hawk, and eagles snatching children are tales and fake videos, because e…», reached through the remembered sentence the question matched. What matched: the same thing acted on «few kilograms» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t5/)

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### Test 6 · wrong ✗ {#t6}

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«why'd a hunter bother diving, just fly straight at the hare» What is the best answer?

- **1.** Diving helps keep the eagle nice and warm — no support
- **2.** Diving builds speed and surprise — **✓ the right answer** · no support
- **3.** Eagles are scared of hares on the ground — **← Mova's choice** · score -1
- **4.** Flying straight is faster than diving — no support

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**Why:** It took the question to ask why something happens (its cause). It chose option 3 with score -1, the only option with support. Its support: lesson 323, line 5: «Golden eagles hunt hares, rabbits and marmots on open hills and mountains, and in a steep dive one can reach well over 200 kilometres an hour.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+1). Against it: the same doer «golden eagles» (-2). The right option, 2, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t6/)

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### Test 7 · right ✓ {#t7}

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What would happen to a tree holding an eagle nest that grows heavier every year?

- **1.** It would turn into a nest itself — no support
- **2.** Nothing, trees can hold anything — score 4
- **3.** It would grow faster and taller because of all the extra weight — no support
- **4.** Its branches may break or it may fall in a storm — **← Mova's choice** · **✓ the right answer** · score 9

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 9, against 4 for the next best. Its support: lesson 253, line 8: «People once cut tunnels through giant sequoias for cars as a tourist trick, and one tunnel tree fell in a storm in 2017.», reached through the option's own match among the sentences about the question's things. What matched: the same place «storm» (+4); the same action «fall» (+3); the same doer «one tunnel tree» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t7/)

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### Test 8 · right ✓ {#t8}

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Hunters shoot a few harpy eagles each year in a forest. Why does this hurt the harpies more than it would hurt sparrows?

- **1.** Harpies are smaller than sparrows — no support
- **2.** Sparrows also eat harpy eggs — no support
- **3.** Harpies cannot see hunters coming, because their eyes are weaker than a sparrow's — score 5
- **4.** Harpies raise one chick every few years, so losses are slow to replace — **← Mova's choice** · **✓ the right answer** · score 7

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**Why:** It took the question to ask why something happens (its cause). It chose option 4 with score 7, against 5 for the next best. Its support: lesson 323, line 8: «Harpy eagles raise only one chick every two or three years, so they come back very slowly when they are hunted or their forest is cut.», reached through the option's own match among the sentences about the question's things. What matched: the same action «raise» (+3); the same property (+2); the same thing acted on «one chick» (+1); a different doer (counts against) (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t8/)

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### Test 9 · wrong ✗ {#t9}

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«eagles got eyes the size of footballs, that's how they see so far» What is right?

- **1.** They see far because they fly near the Sun — **← Mova's choice** · score 10
- **2.** Their eyes are tiny and weak, so they find rabbits by smell instead of sight — score 9
- **3.** Their eyes are about as big as ours but packed with far more light-sensing cells — **✓ the right answer** · score 7
- **4.** Yes, their eyes are as big as footballs — score 7

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**Why:** It took the question to ask what something is like. It chose option 1 with score 10, against 9 for the next best. Its support: lesson 34, line 8: «Eagles see details several times more sharply than people, and an eagle's eyes are about as big as a human's.», reached through the option's own match among the sentences about the question's things. What matched: the same action «see» (+6); the same doer «eagles» (+4). The right option, 3, scored 7. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t9/)

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### Test 10 · wrong ✗ {#t10}

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Why would an eagle that catches big fish need a huge beak?

- **1.** To dig a nest in the ice — score -2
- **2.** To sing loudly to its mate — score -2
- **3.** To tear apart big, tough, slippery meals — **✓ the right answer** · score -2
- **4.** To scoop the fish out from deep under the water — **← Mova's choice** · score 6

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**Why:** It took the question to ask why something happens (its cause). It chose option 4 with score 6, against -2 for the next best. Its support: lesson 134, line 14: «Pelicans scoop fish and water into their throat pouch, then tip their heads to drain the water before swallowing; a brown pelican's pouch holds about 11 litres…», reached through the option's own match among the sentences about the question's things. What matched: the same action «scoop» (+3); the same thing acted on «fish» (+1); the same circumstance (+1); a different doer (counts against) (+1). The right option, 3, scored -2. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t10/)

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### Test 11 · right ✓ {#t11}

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How could you check if an amazing animal video is real?

- **1.** Believe it if it looks clear and sharp and has lots and lots of likes — no support
- **2.** Look for news from trusted sources and experts who checked it — **← Mova's choice** · **✓ the right answer** · score 3
- **3.** Believe it if your friend shared it — no support
- **4.** Count how many likes it has — no support

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**Why:** It took the question to ask what something is like. It chose option 2 with score 3, the only option with support. Its support: lesson 285, line 15: «Apps let children record the animals and plants they see; their photos let experts check what each animal really is and help scientists map where species live.», reached through the remembered sentence the question matched. What matched: the same action «check» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/t11/)

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### Exam question 1 · formal language · wrong ✗ {#e1}

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Identify the part of the body with which an eagle principally kills its prey.

- **1.** The hooked beak — **← Mova's choice** · no support
- **2.** The feet, equipped with four talons — **✓ the right answer** · no support
- **3.** The leading edge of the wings — no support
- **4.** The feathers of the tail — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/e1/)

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### Exam question 2 · formal language · right ✓ {#e2}

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Select the response consistent with the established facts concerning the vocalisation attributed to the bald eagle in cinematographic productions.

- **1.** It is the call of the golden eagle — score 1
- **2.** It is customarily the call of the red-tailed hawk — **← Mova's choice** · **✓ the right answer** · score 6
- **3.** It is the authentic call of the bald eagle, recorded in the wild — score 1
- **4.** It is a sound produced entirely by machinery — no support

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 6, against 1 for the next best. Its support: lesson 323, line 11: «The wild scream given to bald eagles in films is usually the call of a red-tailed hawk; a real bald eagle gives weak, high chirps.», reached through the same lesson line as the sentence the question matched. What matched: the same circumstance (+3); the same light verb (be, have, do, get, go) (+2); the same thing acted on «call» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/e2/)

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### Exam question 3 · formal language · wrong ✗ {#e3}

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Which of the following statements most accurately characterises the vulnerability of the harpy eagle?

- **1.** Its diet consists solely of a single plant — **← Mova's choice** · no support
- **2.** Its slow rate of reproduction impedes the recovery of its numbers following losses — **✓ the right answer** · no support
- **3.** It is incapable of flight — no support
- **4.** Its large clutches of eggs render it vulnerable to overcrowding and to shortages of prey — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/e3/)

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### Exam question 4 · formal language · wrong ✗ {#e4}

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Ascertain the reason for which falconers among the Kazakh people principally employ female golden eagles.

- **1.** Females require no food — **← Mova's choice** · no support
- **2.** Females are larger and more powerful than males — **✓ the right answer** · no support
- **3.** Females possess a superior voice — no support
- **4.** Females are incapable of escaping — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/323-eagles-golden-eagles-harpy-eagles-stellers-sea-eagles-and-eagle-eyes/e4/)

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- ← previous: [322. Snakes to keep away from: cobras, mambas, vipers…](https://md.mova.elamur.ai/free/en/school-run/biology/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/)
- next →: [324. Falcons, hawks, kites, ospreys and vultures](https://md.mova.elamur.ai/free/en/school-run/biology/324-falcons-hawks-kites-ospreys-and-vultures/)
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