--- title: Homing pigeons find their way back over hundreds of kilometres using… — Hidden senses: magnetic birds and turtles, ultra… · tree and pragmatics description: Homing pigeons find their way back over hundreds of kilometres using the sun, landmarks, smells and probably a sense of the Earth's magnetic field. Who acts: Homing pigeons, kilometres. A sentence of the lesson «Hidden senses: magnetic birds and turtles, ultraviolet bees, heat-seeing snakes, whisker --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/5/) [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/) / [Hidden senses: magnetic birds and turt…](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/) / 5 # Hidden senses: magnetic birds and turtles, ultraviolet bees, heat-seeing snakes, whiskers and lateral lines, sentence 5 Homing pigeons find their way back over hundreds of kilometres using the sun, landmarks, smells and probably a sense of the Earth's magnetic field. **Who acts:** Homing pigeons, kilometres · **What happens:** home, find back, use, sense · **To what, where:** way, hundreds, sun, magnetic field This is a sentence of the lesson «Hidden senses: magnetic birds and turtles, ultraviolet bees, heat-seeing snakes, whiskers and lateral lines» 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 (Homing pigeons, kilometres), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes.lesson:5 # text = Homing pigeons find their way back over hundreds of kilometres using the sun, landmarks, smells and probably a sense of the Earth's magnetic field. # source = school lesson (ours) # course = biology # lesson = 232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes.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): no change 1 Homing home VERB VBG VerbForm=Ger 2 amod _ _ 2 pigeons pigeon NOUN NNS Number=Plur 3 nsubj _ _ 3 find find VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 5 nmod:poss _ _ 5 way way NOUN NN Number=Sing 3 obj _ _ 6 back back ADV RB _ 3 advmod _ _ 7 over over ADP IN _ 8 case _ _ 8 hundreds hundred NOUN NNS Number=Plur 3 obl _ _ 9 of of ADP IN _ 10 case _ _ 10 kilometres kilometre NOUN NNS Number=Plur 8 nmod _ _ 11 using use VERB VBG VerbForm=Ger 10 acl _ _ 12 the the DET DT Definite=Def|PronType=Art 13 det _ _ 13 sun sun NOUN NN Number=Sing 11 obj _ _ 14 , , PUNCT , _ 15 punct _ _ 15 landmarks landmark NOUN NNS Number=Plur 13 conj _ _ 16 , , PUNCT , _ 17 punct _ _ 17 smells smell NOUN NNS Number=Plur 13 conj _ _ 18 and and CCONJ CC _ 21 cc _ _ 19 probably probably ADV RB _ 21 advmod _ _ 20 a a DET DT Definite=Ind|PronType=Art 21 det _ _ 21 sense sense NOUN NN Number=Sing 13 conj _ _ 22 of of ADP IN _ 27 case _ _ 23 the the DET DT Definite=Def|PronType=Art 24 det _ _ 24 Earth Earth PROPN NNP Number=Sing 27 nmod:poss _ _ 25 's 's PART POS _ 24 case _ _ 26 magnetic magnetic ADJ JJ Degree=Pos 27 amod _ _ 27 field field NOUN NN Number=Sing 21 nmod _ _ 28 . . 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 | **home** | gerund | | | | | | | tree rules | | 2 | **find back** | present | Homing pigeons | senses's way | | hundreds of kilometres | | | vn discover-84 «NP V NP»: agent=Agent way=Topic | | 3 | **use** | gerund | kilometres *not said here* | the sun and landmarks and smells and a sense of the Earth's magnetic field | | | | | vn eat-39.1 «NP V NP»: agent=Agent sun=Patient | | 4 | **sense** | | | the Earth's magnetic field | | | | | nom sense «cognition transitive»: of=patient | 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:232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes.lesson:5`. **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): no change. **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: [Hidden senses: magnetic birds and turt…, 4](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/4/) - next →: [Hidden senses: magnetic birds and turt…, 8](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/8/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/)