---
title: Birds have no teeth; swallowed grit in a muscly stomach called the g… — Birds: feathers, wings, eggs and flight · tree and pragmatics
description: Birds have no teeth; swallowed grit in a muscly stomach called the gizzard grinds the food, and having no heavy jaws full of teeth keeps the head light for flying. Who acts: Birds, grit. A sentence of the lesson «Birds: feathers, wings, eggs and flight» of the biology course of Mova's primary school
---

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# Birds: feathers, wings, eggs and flight, sentence 16

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Birds have no teeth; swallowed grit in a muscly stomach called the gizzard grinds the food, and having no heavy jaws full of teeth keeps the head light for flying.

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**Who acts:** Birds, grit · **What happens:** have, swallow, call, grind, keep, fly · **To what, where:** teeth, food, heavy jaws, head light · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «Birds: feathers, wings, eggs and flight» 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 (Birds, grit), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:033-birds-feathers-wings-eggs-and-flight.lesson:16
# text = Birds have no teeth; swallowed grit in a muscly stomach called the gizzard grinds the food, and having no heavy jaws full of teeth keeps the head light for flying.
# source = school lesson (ours)
# course = biology
# lesson = 033-birds-feathers-wings-eggs-and-flight.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 ×3, R7-rel-agree ×2
1	Birds	bird	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	no	no	DET	DT	PronType=Neg	4	det	_	_
4	teeth	tooth	NOUN	NNS	Number=Plur	2	obj	_	_
5	;	;	PUNCT	,	_	6	punct	_	_
6	swallowed	swallow	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl	_	_
7	grit	grit	NOUN	NN	Number=Sing	15	nsubj	_	Agree=R5-strong|Haiku=6:obj
8	in	in	ADP	IN	_	11	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	muscly	muscly	ADJ	JJ	_	11	amod	_	Agree=R7-rel-agree|Haiku=11:advmod|HaikuPos=ADV:RB:_
11	stomach	stomach	NOUN	NN	Number=Sing	7	nmod	_	Agree=R5-strong|Haiku=12:obl
12	called	call	VERB	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	6	advcl	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	gizzard	gizzard	NOUN	NN	Number=Sing	15	nsubj	_	_
15	grinds	grind	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	ccomp	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	food	food	NOUN	NN	Number=Sing	15	obj	_	_
18	,	,	PUNCT	,	_	20	punct	_	_
19	and	and	CCONJ	CC	_	20	cc	_	_
20	having	have	VERB	VBG	Tense=Pres|VerbForm=Part	6	conj	_	_
21	no	no	DET	DT	PronType=Neg	23	det	_	_
22	heavy	heavy	ADJ	JJ	Degree=Pos	23	amod	_	_
23	jaws	jaw	NOUN	NNS	Number=Plur	20	obj	_	_
24	full	full	ADJ	JJ	Degree=Pos	20	xcomp	_	_
25	of	of	ADP	IN	_	26	case	_	_
26	teeth	tooth	NOUN	NNS	Number=Plur	24	obl	_	_
27	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	conj	_	Agree=R5-strong|Haiku=2:parataxis
28	the	the	DET	DT	Definite=Def|PronType=Art	30	det	_	_
29	head	head	NOUN	NN	Number=Sing	30	compound	_	_
30	light	light	NOUN	NN	Number=Sing	27	obj	_	_
31	for	for	SCONJ	IN	_	32	mark	_	Agree=R7-rel-agree|Haiku=32:case|HaikuPos=ADP:IN:_
32	flying	fly	VERB	VBG	VerbForm=Ger	30	obl	_	_
33	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Birds | no teeth |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent tooth=Patient |
| 2 | **swallow** | participle |  | no teeth *not said here* |  |  |  |  | vn hiccup-40.1.1 «NP V»: agent=Agent |
| 3 | **call** *speech: assert* | past |  |  |  |  |  |  | vn manner\_speaking-37.3 «NP V that S»: agent=Agent clause=Topic |
| 4 | **grind** | present | grit in a muscly stomach | the food |  |  |  |  | vn carve-21.2-1 «NP V NP»: agent=Agent food=Patient |
| 5 | **have** | gerund |  | no heavy jaws |  |  |  | full *property* | vn birth-28.2-1 «NP V NP»: agent=Agent jaw=Patient |
| 6 | **keep** | present | grit in a muscly stomach *not said here* | the head light |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent light=Theme |
| 7 | **fly** | gerund |  |  |  |  |  |  | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme |

<!-- .note -->
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.

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**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:033-birds-feathers-wings-eggs-and-flight.lesson:16`.

**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 ×3, R7-rel-agree ×2. **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/).

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- ← previous: [Birds: feathers, wings, eggs and flight, 15](https://md.mova.elamur.ai/free/en/corpora/school/biology/33-birds-feathers-wings-eggs-and-flight/15/)
- next →: [Birds of prey and owls, 0](https://md.mova.elamur.ai/free/en/corpora/school/biology/34-birds-of-prey-and-owls/0/)
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