--- title: Bald eagles fell to about 400 to 500 nesting pairs in the lower 48 U… — Conservation: how people help animals come back · tree and pragmatics description: 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 into the fish and then into the eagles that ate them, made their eggshells too thin; after DDT was banned in 1972 they recovered to well over --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/78-conservation-animals-come-back/4/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [Conservation: how people help animals…](https://md.mova.elamur.ai/free/en/corpora/school/biology/78-conservation-animals-come-back/) / 4 # Conservation: how people help animals come back, sentence 4 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 into the fish and then into the eagles that ate them, made their eggshells too thin; after DDT was banned in 1972 they recovered to well over 300,000 birds. **Who acts:** Bald eagles, 400 pairs, pesticide DDT, eagles · **What happens:** fell, nest, build up, eat, make, ban · **To what, where:** 400 pairs, tiny water bugs, eagles, eggshells, DDT, 1972 This is a sentence of the lesson «Conservation: how people help animals come back» of the biology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Bald eagles, 400 pairs, pesticide DDT, eagles), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:078-conservation-animals-come-back.lesson:4 # text = 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 into the fish and then into the eagles that ate them, made their eggshells too thin; after DDT was banned in 1972 they recovered to well over 300,000 birds. # source = school lesson (ours) # course = biology # lesson = 078-conservation-animals-come-back.lesson # annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×6, R7-rel-agree ×3 1 Bald bald ADJ JJ Degree=Pos 2 amod _ _ 2 eagles eagle NOUN NNS Number=Plur 3 nsubj _ _ 3 fell fell VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 0 root _ _ 4 to to ADP IN _ 6 case _ _ 5 about about ADV RB _ 6 advmod _ _ 6 400 400 NUM CD NumForm=Digit|NumType=Card 10 nummod _ _ 7 to to ADP IN _ 8 case _ _ 8 500 500 NUM CD NumForm=Digit|NumType=Card 6 nmod _ Agree=R7-rel-agree|Haiku=6:conj 9 nesting nest VERB VBG Tense=Pres|VerbForm=Part 10 acl _ _ 10 pairs pair NOUN NNS Number=Plur 3 obl _ _ 11 in in ADP IN _ 16 case _ _ 12 the the DET DT Definite=Def|PronType=Art 16 det _ _ 13 lower low ADJ JJR Degree=Cmp 16 amod _ _ 14 48 48 NUM CD NumForm=Digit|NumType=Card 16 nummod _ _ 15 US US PROPN NNP Number=Sing 16 compound _ _ 16 states state NOUN NNS Number=Plur 10 nmod _ _ 17 by by ADP IN _ 19 case _ _ 18 the the DET DT Definite=Def|PronType=Art 19 det _ _ 19 1960s 1960s NOUN NNS Number=Ptan|NumForm=Combi|NumType=Card 3 obl _ _ 20 , , PUNCT , _ 25 punct _ _ 21 partly partly ADV RB _ 45 advmod _ Agree=R5-strong|Haiku=25:advmod 22 because because SCONJ IN _ 45 mark _ _ 23 the the DET DT Definite=Def|PronType=Art 25 det _ _ 24 pesticide pesticide NOUN NN Number=Sing 25 compound _ _ 25 DDT DDT NOUN NNP Number=Sing 45 nsubj _ _ 26 , , PUNCT , _ 27 punct _ _ 27 building build VERB VBG VerbForm=Ger 25 acl _ _ 28 up up ADP RP _ 27 compound:prt _ Agree=R7-rel-agree|Haiku=27:advmod|HaikuPos=ADV:RB:_ 29 from from ADP IN _ 32 case _ _ 30 tiny tiny ADJ JJ Degree=Pos 32 amod _ _ 31 water water NOUN NN Number=Sing 32 compound _ _ 32 bugs bug NOUN NNS Number=Plur 27 obl _ _ 33 into into ADP IN _ 35 case _ _ 34 the the DET DT Definite=Def|PronType=Art 35 det _ _ 35 fish fish NOUN NN Number=Sing 27 obl _ Agree=R5-strong|Haiku=32:nmod 36 and and CCONJ CC _ 40 cc _ _ 37 then then ADV RB PronType=Dem 40 advmod _ _ 38 into into ADP IN _ 40 case _ _ 39 the the DET DT Definite=Def|PronType=Art 40 det _ _ 40 eagles eagle NOUN NNS Number=Plur 35 conj _ _ 41 that that PRON WDT PronType=Rel 42 nsubj _ _ 42 ate eat VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 40 acl:relcl _ _ 43 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 42 obj _ _ 44 , , PUNCT , _ 25 punct _ _ 45 made make VERB VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 3 advcl _ _ 46 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 47 nmod:poss _ _ 47 eggshells eggshell NOUN NNS Number=Plur 45 obj _ _ 48 too too ADV RB _ 49 advmod _ _ 49 thin thin ADJ JJ Degree=Pos 45 xcomp _ Agree=R5-strong|Haiku=47:amod 50 ; ; PUNCT , _ 54 punct _ _ 51 after after SCONJ IN _ 54 mark _ Agree=R5-strong|Haiku=52:case|HaikuPos=ADP:IN:_ 52 DDT DDT PROPN NNP Number=Sing 54 nsubj:pass _ Agree=R7-rel-agree|Haiku=54:obl|HaikuPos=NOUN:NNP:Number=Sing 53 was be AUX VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 54 aux:pass _ _ 54 banned ban VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 58 advcl _ _ 55 in in ADP IN _ 56 case _ _ 56 1972 1972 NUM CD NumForm=Digit|NumType=Card 54 obl _ _ 57 they they PRON PRP Case=Nom|Number=Plur|Person=3|PronType=Prs 58 nsubj _ _ 58 recovered recover VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 3 conj _ _ 59 to to ADP IN _ 63 case _ _ 60 well well ADV RB Degree=Pos 62 advmod _ Agree=R5-strong|Haiku=63:advmod 61 over over ADV RB _ 62 advmod _ Agree=R5-strong|Haiku=63:case|HaikuPos=ADP:IN:_ 62 300,000 300000 NUM CD NumForm=Digit|NumType=Card 63 nummod _ _ 63 birds bird NOUN NNS Number=Plur 58 obl _ _ 64 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **fell** | past | Bald eagles | 400 pairs in the lower 48 US states | | | | by the 1960s | tree rules | | 2 | **nest** | gerund | 400 pairs in the lower 48 US states *not said here* | | | | | | vn berry-13.7 «NP V»: agent=Agent | | 3 | **build up** | gerund | the pesticide DDT *not said here* | | | tiny water bugs | | into the fish and the eagles | vn caused\_calibratable\_cos-45.6.2-1 «NP V ADV-Middle»: agent=Patient | | 4 | **eat** | past | the eagles | eagles *= eagle* | | | | | vn eat-39.1-1 «NP V NP»: agent=Agent they=Patient | | 5 | **make** | past | the pesticide DDT | eagles's eggshells | | | | partly, thin *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset eggshell=Product | | 6 | **ban** | past · passive | | DDT | | 1972 | | | vn forbid-64.4-1 «NP V NP»: subject=Theme | | 7 | **recover** | past | eagles *= eagle* | | | | | to 300,000 birds | vn obtain-13.5.2 «NP V NP»: agent=Agent | One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree. **Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:biology:078-conservation-animals-come-back.lesson:4`. **The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×6, R7-rel-agree ×3. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence. See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/). - ← previous: [Conservation: how people help animals…, 3](https://md.mova.elamur.ai/free/en/corpora/school/biology/78-conservation-animals-come-back/3/) - next →: [Conservation: how people help animals…, 5](https://md.mova.elamur.ai/free/en/corpora/school/biology/78-conservation-animals-come-back/5/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/78-conservation-animals-come-back/)