| Lettish | zile | Great Tit, 390 |
| Lith. | zyléet var. | Great Tit, 390 |
| Pers. | cilak | Black Kite, 215 |
| Turkish | cailak | (pre-Osman substr.) Black Kite, 215 |
| Alb. | cyle | flute |
| Alb. | cylek | Golden Plover, 161 |
| Bielor. | Sylec, zylec | Wigeon, 46 |
| Pol. | cilutka | Lapwing, 158 |
| Russian | cilik | House Sparrow, 410 |
| Sbc. | cilikati et var. | to sing (birds) |
| Sbc. | cvilikati | (parasitic /v/) to warble |
| Sbc. | cvilijeti | to cry, to lament |
| Bulg. | cvilja | to neigh |
| Czech | kvileni | moaning |
| Sbc. | Svljati | to whistle (birds) |
| Lith. | Silpti | to whistle |
| Lith. | Svilpis,Svirpis | Bullfinch, 430 |
| Lettish | svilpis | Bullfinch, 430 |
| Lettish | svelpite | Blackbird, 343 |
| Lith. | Svilpokas | Blackbird, 343 |
| Breton | chilpa | to bark |
| Breton | chilpion | sandpipers, 180, Golden Plover, 161 |
| Engl.: Scot. | chilp | to chirp |
| Lettish | zvukSkis | Wigeon, 46 |
| Ital.: Marche | cilicchia et var. | Great Tit, 390 |
| Roman. | cilihoaie | Black Kite, 215, Buzzard, 211 |
| Mod.Greek | tsilivithra et var. | Green Woodpecker, 270 |
| Ital.: I.Lipari | ziddirica | bat, 16.8 |
| Ital.: Sard. | tsilibricu | grasshopper |
| Ital.: Sard. | cilibríu et var. | Kestrel, 234 |
| Lith. | tilvikas et var. | sandpipers, 271 |
| Lettish | tilbite et var. | sandpipers, 271 |
| Franç.: Pic | tilvot | sandpipers, 271 |
| Germ.reg. | asilvogel | Willow Warbler, 384 |
| Franç. | siler | to whistle |
| Franç.centre | chiler | crépiter (beurre dans la poêle) FEW 23:202 |
| Franç.rég. | silan, silard | Black Swift, 321 |
| Franç.rég. | silouette | Tree Pipit, 307 |
| Ital.: Ligur. | zita | Tree Pipit, 307 |
| Ital.: Cal. | silise | Tree Pipit, 307 |
| Ital.: Tosc. | zíllo | chirping of some birds |
| Ital.: Lucca | zillorone | Corn Bunting, 445 |
| Ital.: Ven. | silonso | Bullfinch, 430 |
| Ital.: Lomb. | silons | Curlew, 167 |
| Ital.: Piem. | turd chilons | Song Thrush, 339 |
| Prov. | sieulet, chilet | pigeon |
| Prov.: dauph. | ésiéla | pleurer, FEW 22: 61 |
| Ital.: Campid.(Sard.) | sular, sulittai | to whistle |
| Ital.: Campid(Sard.) | suliettu | whistle |
| Ital.: Rieti | ciletta | Woodlark, 298 |
| Franç.: Lavedan | tillá | to cry |
| Franç.: Cantal | tillada | glas, FEW 23: 148 |
| Franç.: Brive | tillar | tinter, FEW 23:157 |
| Esp. | chillar | to shriek |
| Esp. | bachiller | talkative; Linnet, 422 |
| Esp. | chillón | House Sparrow, 410 |
| Esp. | chilladero | Wigeon, 46; Corn Bunting, 445 |
| Gallego | chío | chirping |
| Port. | chião | Black Swift, 321 |
| Basque | txiunti | chirping |
| Roman. | tioli | to whistle |
| Anc.Greek | sialis | an unidentified bird |
| Sbc. | cula | bird |
| Alb. | qole | Woodlark, 298 |
| Ital.: Feltre | antiola | Woodlark, 298 |
| Ital.: Romg. | siola | Common Tern, 97 |
| Ital.: Friuli | ciule | Common Tern, 97 |
| Ital.: Ven. | ceolina | Common Tern, 97 |
| Ital.: Cortina | ciulà | ciurlare |
| Franç.: Périg. | siulá | sicler |
| Franç.: Béarn. | soulòm | cantilène monotone, FEW 23: 142 |
| Franç.: Gers | soálh | pépiement, brouhaha, FEW 23: 198 |
| Franç.: Tournecoupe | sualhadis | concert confus (d'oiseaux) |
| Franç.: Ldes | souhoalá | parler à l'oreille; moucher, FEW 21: 316 |
| Roman. | suerà | to whistle |
| Russian reg. | zuek | Ringed Plover, 163 |
| Prov. | choulo | Tawny Owl, 239 |
| Franç.: Auxel. | choli | bruire (eau), FEW 23: 201 |
| Franç.: Namur | chulter, chilter | cliqueter, FEW 23: 200 |
| Franç.: Quercy | xioulá(=Sioulá) | piauler |
| Cat. | xiulaire | Wigeon, 46 |
| Franç.: Teste | xiulan | Wigeon, 46 |
| Franç.: Gasc. | chula | un oiseau indéterminé |
| Franç.: Marche | juler | to whistle, FEW 23: 195 |
| Germ.reg. | schillele | chick, 2 |
| Russian | Sulan | Bullfinch, 430 |
| Sbc. | Suljka | Bullfinch, 430 |
| Pol. | suliszka | Woodlark, 298 |
| Pol. | szulek | Black Kite, 215 |
| Ukr. | Sulika, Suljaka | Black Kite, 215 |
| Bielor. | Suljacok | Kestrel, 234 |
| Bielor. | Sylec | Wigeon, 46 |
| Lith. | ciuldeti | to warble |
| Lith. | ciuldutis | Chaffinch, 432 |
| Lith. | ciulba | Song Thrush, 339 |