Sparrow

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Old English spearwa, of Germanic origin.

wiktionary

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From Middle English sparwe, sparowe, from Old English spearwa, from Proto-West Germanic *sparwō, from Proto-Germanic *sparwô, from Proto-Indo-European *spḗr(“sparrow”).

Cognate with Dutch spreeuw(“starling”), Alemannic German Spar(“sparrow”), German Sperling(“sparrow”), Danish and Norwegian Bokmål spurv(“sparrow”), Norwegian Nynorsk sporv(“sparrow”), Swedish sparv(“sparrow”), Breton frao(“crow”), Tocharian A spārāñ, Ancient Greek ψάρ(psár, “starling”).

etymonline

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sparrow (n.)

small brownish-gray bird (Passer domesticus), Old English spearwa, from Proto-Germanic *sparwan (source also of Old Norse spörr, Old High German sparo, German Sperling, Gothic sparwa), from PIE *spor-wo-, from root *sper- (3), forming names of small birds (source also of Cornish frau "crow;" Old Prussian spurglis "sparrow;" Greek spergoulos "small field bird," psar "starling"). In use, with qualifying words, of many small, sparrow-like birds. Sparrowfarts (1886) was Cheshire slang for "very early morning."