| Lettish | kaukti, kiauksti | to bark, chirp, etc. |
| Lettish | kaukis | Whitethroat, 362 |
| Lith. | kaukys | Whitethroat, 362; Jackdaw, 285 |
| Lettish | kaukis | shrill; Corn Crake, 146 |
| Lith. | kaukesys | howling |
| Lith. | Saukin | to cry |
| Lith. | suokti | to sing |
| Breton | chaok | chattering |
| Lith. | kaukutis, kaukalé | Bittern, 125 |
| Anc.Greek | kaukalias | an unidentified bird |
| Cymric | cawci | Jackdaw, 285 |
| Ukr. | kauka | (Cz., Sbc. id.) Jackdaw, 285 |
| Germ.reg. | kauk | Jackdaw, 285 |
| Sbc. | cauka | Jackdaw, 285 |
| Lettish | kaklis | Jackdaw, 285 |
| Czech | koktati | to stammer |
| Sbc. | kaukavac | Black-headed Gull, 90; Herring Gull, 81 |
| Sbc. | kaukati | to call (Herring Gull, 81) |
| Russian | cajka | (Ukr., Sbc. id.) Black-headed Gull, 90 |
| Ukr. | cajka | (Cz., Slk. id.) Lapwing, 158 |
| Roman. | ciaucâet var. | Herring Gull, 81; Magpie, 288 |
| Cat. | quequet | cicada |
| Cat. | queco | stutterer |
| Franç.rég. | queque et var. | id. |
| Ital.: Sic. | checu | id. |
| Ital.: Friuli | kekul | id. |
| Ital.: Bell. | chechignar | to stammer |
| Ital.: Piem. | chechezzá | id. |
| Franç.: Aoste | cécailler | id. |
| Ital.: Oss., Valsug. | skekedàr | id. |
| Germ.reg. | kekersch | Magpie, 288 |
| Sbc. | keka | id. |
| Ital.reg. | chèca | id. |
| Roman. | céuca | id. |
| Roman. | cicoare | Garden Warbler, 357 |
| Ital. | checcalare | to cackle |
| Flemish | kaekelen | to cackle |
| Engl. | cackle | to cackle |
| Esp.reg. | chajorro | Woodchat, 327 |
| Gallego | aqueixarse | to complain |
| Port. | queijeira | Wheatear, 349 |
| Esp. | queja | plaint, murmur, growling |
| Esp.: Soria | queo | Tree Pipit, 307 |
| Russian reg. | dzycat' | to tinkle |
| Czech | hýkáti | to bray |
| Nederl. | hek | gate, railing |
| Engl. | heck | a device on a loom |
| Engl. | heckle | to harass with gibes |
| Roman. | chicot | a burst of laughing |
| Ital.reg. | quicquera | Avocet, 157 |
| Franç.rég. | kéklé | to chatter |
| Prov. | kikléto | rattle, FEW 23: 200 |
| Franç. | chicaner | to quarrel, scold |
| Franç.: Norm. | chicoter | to bargain |
| Prov. | chicà | to chatter |
| Germ.: Suisse | kachel | Jackdaw, 285 |
| Germ.: Suisse | kächel | Coot, 138 |
| Germ.: VS | chächlä | Carrion Crow, 280 |
| Germ.: Aoste | kheâkhu | Carrion Crow, 280 |
| Germ.reg. | käke, tschäker | Jay, 290 |
| Franç.rég. | kâke et var. | Jay, 290 |
| Germ.reg. | zuikäkche | Whitethroat, 362 |
| Germ.reg. | zaunquäker | Whitethroat, 362 |
| Germ. | qwäker | Brambling, 433 |
| Ital.: Feltre | chéc | Brambling, 433 |
| Franç.: wall. | kêkeu, caïkeu | Brambling, 433 |
| Franç.: SR | tioquet | Brambling, 433 |
| Franç.: Gasc. | chuquet | Brambling, 433 |
| Franç.: Tourcoing | caïque | cri de douleur, FEW 22: 8 |
| Franç.rég. | quèche | Song Thrush, 339 |
| Franç.: Sav. | thietta | Song Thrush, 339 |