Rom

From Old Frisian *ram, from Proto-Germanic *rammaz. Cognates include West Frisian raam and German Ramme.


Wurm

From Old Frisian worm, from Proto-West Germanic *wurmi. Cognates include West Frisian wjirm and German Wurm.


Appel

From Old Frisian appel, from Proto-West Germanic *applu. Cognates include West Frisian apel and German Apfel.


Boom

From Old Frisian bām, from Proto-West Germanic *baum. Cognates include West Frisian beam and German Baum.


Elefant

Borrowed from German Elefant, from Middle High German hëlfant, from Latin elephans.


Hart

From Old Frisian hert, from Proto-West Germanic *herut. Cognates include West Frisian hart and German Hirsch.


Kat

From Old Frisian katte, from Proto-West Germanic *kattā. Cognates include West Frisian kat and German Katze.


Holt

From Old Frisian holt, from Proto-West Germanic *holt. Cognates include German Holz and West Frisian hout.


Otter

From Old Frisian *otter, from Proto-West Germanic *otr. Cognates include West Frisian otter.


Pere

From Old Frisian *pere, from Proto-West Germanic *peru. Cognates include West Frisian par and German Birne.


Säge

Borrowed from Middle Low German sēge, borrowed from Middle High German zege, from Old High German ziga, from Proto-West Germanic *tigā. Cognates include German Ziege and German Low German Zeeg.


Fink

From Old Frisian *fink, from Proto-West Germanic [Term?], from Proto-Germanic *finkiz. Cognates include West Frisian fink and English finch.


Hanne

From Old Frisian *hane, from Proto-West Germanic *hannju. Cognates include West Frisian hin and German Henne.


Oape

From Old Frisian *apa, from Proto-West Germanic *apō. Cognates include West Frisian aap and German Affe.


Wulf

From Old Frisian wolf, from Proto-West Germanic *wulf. Cognates include West Frisian wolf and German Wolf.


Fisk

From Old Frisian fisk, from Proto-West Germanic *fisk. Cognates include West Frisian fisk and German Fisch.


Ieme

From Old Frisian *em, *eme (in derivative emka), from Proto-Germanic *imbī.


Ku

From Old Frisian kū, from Proto-West Germanic *kō (“cow”).


Adder

Borrowed from German Low German Adder, from Middle Low German nader, from Old Saxon nadra, from Proto-West Germanic *nadrā. Doublet of Neder.


Houf

From Old Frisian hōf, from Proto-West Germanic *hōf, from Proto-Germanic *hōfaz. Cognates include West Frisian hoef and German Huf.


Buk

From Old Frisian *buk, from Proto-West Germanic *bukk. Cognates include West Frisian bok and German Bock.


Rotte

From Old Frisian *ratte, from Proto-Germanic *rattō. Cognates include Dutch rat and Yiddish ראַץ (rats).


Oai

From Old Frisian *āi, from Proto-West Germanic *aij. Cognates include West Frisian aai and German Ei.


Houden

From Old Frisian horn, from Proto-West Germanic *horn. Cognates include West Frisian hoarn and German Horn.

(Romelse, Skäddel) horn (animal body part)


Oante

From Old Frisian *aned, from Proto-West Germanic *anad. Cognates include German Ente and West Frisian ein.


Boas

From Old Frisian [Term?], from Proto-West Germanic *bars. Cognates include Dutch baars and German Barsch.


Foaks

From Old Frisian *foks, from Proto-West Germanic *fuhs. Cognates include West Frisian foks and German Fuchs.


Swien

From Old Frisian swīn, from Proto-West Germanic *swīn. Cognates include West Frisian swyn and German Schwein.


Taks

From Old Frisian *thaks, from Proto-West Germanic *þahs. Cognates include Dutch das and German Dachs. Doublet of Daks.


Oue

From Old Frisian ei, from Proto-West Germanic *awi. Cognates include West Frisian ei and German Aue.


Skäip

From Old Frisian skēp, from Proto-West Germanic *skāp. Cognates include West Frisian skiep and German Schaf.


Rubbe

Borrowed from Middle Low German rubbe (“rabbit, seal”). Cognates include West Frisian robbe and German Robbe.


Swoan

From Old Frisian *swan, *swon, from Proto-West Germanic *swan. Cognates include West Frisian swan and German Schwan.


Gous

From Old Frisian *gōs, from Proto-West Germanic *gans. Cognates include West Frisian goes and German Gans.


Hauk

From Old Frisian hauk, from Proto-West Germanic *habuk. Cognates include West Frisian hauk and German Habicht.


Bäist

Ultimately from Middle Dutch beest, from Old French beste, from Latin bestia. Cognates include German Biest, Dutch beest, English beast.


Säid

From Old Frisian sēd, from Proto-West Germanic *sād. Cognates include West Frisian sied and Dutch zaad.


Bäie

From Old Frisian *berie, from Proto-West Germanic *baʀi, from Proto-Germanic *bazją. Compare West Frisian bei (“berry”). Compare also Middle Dutch baye (“berry”), from Old French baie, baia, from Latin bāca (“berry, fruit”).


Räi

From Old Frisian *rē, *rā, from Proto-Germanic *raihô, *raihą (“deer”). More at roe.


Jadder

From Old Frisian jāder, from Proto-West Germanic *eudar, a variant of *ūdar, from Proto-Germanic *ūdarą. Cognates include West Frisian jaar and German Euter.


Stoark

From Old Frisian *stork, from Proto-West Germanic *stork. Cognates include German Storch and dialectal Dutch stork.


Dole

Borrowed from German Dohle (“jackdaw”), whence also Alpendohle (“alpine chough”).

Pyrrhocorax graculus
Pyrrhocorax graculus#Translingual


Räier

From Old Frisian hrēther, from Proto-West Germanic *hrunþ, from Proto-Germanic *hrunþaz. Cognates include West Frisian rier and German Rind.


Hone

From Old Frisian hona, from Proto-West Germanic *hanō. Cognates include German Hahn and West Frisian hoanne.
The senses "tap" and "hammer" are a semantic loan from German Hahn.


Toom

From Old Frisian tām, from Proto-West Germanic *taum. Cognates include German Zaum and West Frisian team.


Gäärs

From Old Frisian gers, from Proto-West Germanic *gras. Cognates include West Frisian gers and German Gras.


Weete

From Old Frisian wēt, hwēte, from Proto-Germanic *hwaitijaz. More at wheat.


Bouke

From Old Frisian bōk, from Proto-West Germanic *bōkijā. Cognates include West Frisian boek and German Buche.


Noachtegoal

/ˈnɔːxtəˌɣɔːl/

From Old Frisian *nachtegāle, from Proto-West Germanic *nahtigalā. Cognates include West Frisian geale and German Nachtigall. Doublet of Nachtigal.

Luscinia megarhynchos
Luscinia megarhynchos#Translingual


Reger

From Old Frisian *hrēgra, from Proto-West Germanic *hraigrō. Cognates include West Frisian reager and German Reiher. Doublet of Raier.

Ardea cinerea
Ardea cinerea#Translingual


Märe

From Old Frisian merie, from Proto-West Germanic *marhijā. Cognates include West Frisian merje and German Mähre.


Akster

From Old Frisian *akster, from Proto-West Germanic *agastrijā. Cognates include German Elster and West Frisian akster.


Boare

From Old Frisian *bara, from Proto-West Germanic *berō. Cognates include West Frisian bear and German Bär.


Múus

From Old Frisian mūs, from Proto-West Germanic *mūs. Cognates include West Frisian mûs and German Maus.


Wöilmúus

From wöile (“to rummage”) + Múus (“mouse”). Akin to German Wühlmaus and Dutch woelmuis.


Húusmúus

From Húus (“house”) + Múus (“mouse”). Akin to Dutch huismuis and German Hausmaus.


Fäildmúus

From Fäild (“field”) + Múus (“mouse”). Akin to Dutch veldmuis and German Feldmaus.

Microtus arvalis
Microtus arvalis#Translingual


Fledermúus

Akin to West Frisian flearmûs and German Fledermaus.


Spitsmúus

From spits (“pointy”) + Múus (“mouse”). Akin to Dutch spitsmuis and German Spitzmaus.


Katteker

From or akin to German Low German Katteker (“squirrel”). Compare also German Low German Eckelkater, Eckelkatt, German Eichkater, dialectal English cat-swirrel.


Stíekelswien

From Stíekel (“spike”) + Swien (“pig”). Akin to Dutch stekelvarken and German Stachelschwein.


Hoaze

From Old Frisian hase, from Proto-West Germanic *hasō. Cognates include West Frisian hazze and German Hase.


Wiezelke

From Old Frisian *wisele, from Proto-West Germanic *wisulā. Cognates include German Wiesel and Dutch wezel.

Mustela erminea
Mustela erminea#Translingual


Geet

From Old Frisian *gāt, from Proto-West Germanic *gait.


Íezel

From Old Frisian *esel, from Proto-West Germanic *asil. Cognates include West Frisian ezel and German Esel.


Houngst

From Old Frisian hangst, from Proto-West Germanic *hangist. Cognates include West Frisian hynst and German Hengst (“stallion”). Doublet of Hingst.


Púus

From Old Frisian [Term?], from Proto-West Germanic [Term?]. Cognates include Dutch poes and English puss.


Leeuwe

From Old Frisian *lewa, from Proto-West Germanic *lēwō. Cognates include West Frisian liuw and German Löwe.


Wilp

Related to Dutch wulp and Low German Welp.

plover (bird of the family Charadriidae)


Múurhoungst

From Múur (“mother”) + Houngst (“horse”).


Húund

From Old Frisian hund, from Proto-West Germanic *hund. Cognates include West Frisian hûn and German Hund.

Canis familiaris
Canis familiaris#Translingual


Hingst

Borrowed from German Low German Hingst, from Middle Low German hingst, from Old Saxon *hengist, from Proto-West Germanic *hangist. Doublet of Houngst.


Múur

From Old Frisian mōder, from Proto-Germanic *mōdēr. Cognates include West Frisian moer and German Mutter.


rood Täk

Vulpes vulpes
Vulpes vulpes#Translingual


Greeuwer

From greeuwe (“to dig”) + -er. Akin to German Gräber.


Daks

Borrowed from German Low German Dacks, from Middle Low German das, from Old Saxon thahs, from Proto-West Germanic *þahs. Doublet of Taks.


Fiskotter

From Fisk (“fish”) + Otter (“otter”). Akin to Dutch visotter and German Fischotter.


Gäize

Originally a plural of Gous, reanalysed as a singular by most speakers.


Neder

From Old Frisian *nēdre, from Proto-West Germanic *nadrā. Cognates include West Frisian njirre and German Natter. Doublet of Adder.


Moalkku

From Moalk (“milk”) + Ku (“cow”). Akin to German Milchkuh and Dutch melkkoe.


Muzebuk

From Múus (“mouse”) + -e- (“buck”) + Buk.


Roage

From Old Frisian rogga, from Proto-West Germanic *roggō. Cognates include German Roggen and West Frisian rogge.


Swoalke

From a diminutive of Old Frisian *swale, from Proto-West Germanic *swalwā. Cognates include German Schwalbe and West Frisian swel.


Seemeeske

From See (“sea”) + Meeske (“tit”). Perhaps influenced by other West Germanic languages, like Dutch zeemeeuw and German Seemöwe, which form the second part from a visually similar word meaning "gull".


Meeske

From a diminutive of Old Frisian *mēse, from Proto-West Germanic *maisā. Cognates include German Meise and West Frisian mieske.


Wipstäit

From wipje (“to swing”) + Stäit (“tail”). Compare German vipstjert.

Motacilla alba
Motacilla alba#Translingual


Kufúgel

Emberiza citrinella
Emberiza citrinella#Translingual


Fúgel

From Old Frisian fugel, from Proto-West Germanic *fugl. Cognates include German Vogel and West Frisian fûgel.


Stäit

From Old Frisian stert, from Proto-West Germanic *stert. Cognates include German Sterz and West Frisian sturt.


Kudderhone

From kudderje (“to court”) + Hone (“rooster”).

compound

Lyrurus tetrix
Lyrurus tetrix#Translingual


Krikhanne

Gallinula chloropus
Gallinula chloropus#Translingual


Wienfúgel

Turdus philomelos
Turdus philomelos#Translingual


Holtakster

Garrulus glandarius
Garrulus glandarius#Translingual


Häägakster

From häägje (“to cherish”) + Akster (“magpie”).


Dröizelke

From a diminutive of Old Frisian [Term?], from Proto-West Germanic *þrostlā (“thrush”).

Turdus merula
Turdus merula#Translingual


Ule

From Old Frisian *ūle, from Proto-West Germanic [Term?], from Proto-Germanic *uwwalǭ. Cognates include West Frisian ûle and German Eule.


Katule

From Kat (“cat”) + Ule (“owl”). Akin to West Frisian katûle.


Blaumäske

Periparus ater
Periparus ater#Translingual


Kieviet

From Old Frisian [Term?], from Proto-West Germanic [Term?]. Cognates include German Kiebitz, Dutch kieviet and German Low German Kievitt.

Vanellus vanellus
Vanellus vanellus#Translingual


Wíelde Gous

Anser fabalis
Anser fabalis#Translingual


Koolmeeske

From Old Frisian *kolemēse, from Proto-West Germanic *kolamaisā. Cognates include German Kohlmeise and Dutch koolmees.


Kukuuk

From Old Frisian [Term?], from Proto-West Germanic [Term?]. Cognates include West Frisian koekoek, German Kuckuck and Dutch koekoek.


Rouk

From Old Frisian [Term?], from Proto-West Germanic *hrōk. Cognates include West Frisian roek and German Ruch.


Soaltrouk

From Soalt (“salt”) + Rouk (“crow”), referring to the greyish-white colour of its feathers.

Corvus cornix
Corvus cornix#Translingual


Nachtigal

Borrowed from German Nachtigall. Doublet of Noachtegoal.

Luscinia megarhynchos
Luscinia megarhynchos#Translingual


Raier

Borrowed from German Reiher. Compare Luxembourgish Räer. Doublet of Reger.


Roave

From Old Frisian ravan, from Proto-West Germanic *hrabn. Cognates include West Frisian raven and German Rabe.
Alternatively from Middle Low German rāve, ultimately from the same Proto-West Germanic source.


Läiverke

/ˈlɛɪ̯vərkə/

From Old Frisian *lēwerke, from Proto-West Germanic *laiwarikā. Cognates include West Frisian ljurk and German Lerche.


Holtdúve

From Holt (“wood”) + Dúve (“dove”). Akin to West Frisian houtdo and Dutch houtduif.

Streptopelia turtur
Streptopelia turtur#Translingual


Dúve

From Old Frisian *dūve, from Proto-West Germanic *dūbā. Cognates include West Frisian do and German Taube.


Wíelde Oante

Literally: "Wild duck". Akin to West Frisian wylde ein and Dutch wilde eend.

Anas platyrhynchos
Anas platyrhynchos#Translingual


Ringeldúve

/ˈrɪŋəlˌduːvə/

From German ringeln (“to twine”) + Dúve (“dove”), calque of German Ringeltaube.

Columba palumbus
Columba palumbus#Translingual


Woaterhanne

From Woater (“water”) + Hanne (“hen”). Akin to German Wasserhuhn and Dutch waterhoen.


Oadler

Borrowed from another West Germanic language. Cognates include German Adler, German Low German Aadler and Dutch adelaar.


Petrieshanne

From Old Frisian [Term?], from Latin perdix. Cognates include Dutch patrijs and English partridge.


Lünik

Borrowed from Middle Low German lǖning, from Old Saxon hliuning. Cognates include German Low German Lünk.


Sloange

From Old Frisian *slange, from Proto-West Germanic [Term?], from Proto-Germanic *slangô. Cognates include West Frisian slange and German Schlange.


Díert

Uncertain. Either:
* Inherited from Old Frisian diēr (whence North Frisian Diirt).
* Borrowed from Middle Low German dērt (whence German Low German Diert).
Ultimately in any case from Proto-West Germanic *deuʀ. Cognates include West Frisian dier and German Tier.


Wuttel

From Old Frisian wortel, from Proto-West Germanic [Term?], from Proto-Germanic *wurtwaluz. Cognates include West Frisian woartel and German Wurzel.


Wíelge

From Old Frisian *wilge, from Proto-West Germanic *wilgijā. Cognates include German Wilge and Dutch wilg.


Snouk

Related to West Frisian snoek and Dutch snoek.


Kwabbe

Ultimately from Proto-West Germanic *kwabbā.