| Franç.rég. | jaque, jaquette etc. | Magpie, 288 |
| Franç.rég. | jaque, jacot etc. | Jay, 290 |
| Germ.reg. | jäck, jäg | Jay, 290 |
| Lith. | jãknas | liver |
| Lettish | aknas | liver |
| Engl.reg. | jack-nicker | Goldfinch, 415 |
| Engl.reg. | jack-backer | Great Grey Shrike, 324 (liter. "spotted back") |
| Engl.reg. | jack-ickle etc. | Great Spotted Woodpecker, 273 |
| Engl.reg. | jack-star | Starling, 293 |
| Engl.reg. | jack-hawk, jack-e-stop | Kestrel, 234 |
| Engl.reg. | jack-merlin | Merlin ? , 233 |
| Engl.reg. | yellow-jacket | wasp (literally "yellow-jacked" or yellow-spotted) |
| Engl.reg. | jacky-cocktail | Cormorant, 105 |
| Engl.reg. | jacob | Jay, 290; Starling, 293 |
| Germ. reg. | jeck, jäcker, jakob | Starling, 293; Jay, 290 |
| Germ.reg. | blässjacob | Coot, 138 |
| Franç. | jacob | Jay, 290 |
| Franç.: Périgord | jacat | marked with smallpox |
| Franç.: Chavanat | jocó | marked with various colours |
| Franç.: Gasc. | jacou | Barn Owl, 238 |
| Franç.: Chaussin | jaquei (se) | se tacher par l'humidité, FEW 23: 257 |
| Franç. | jacobin | a religious order; Lapwing, 158; Tufted Duck, 48 |
| Franç.: Mâcon | jacobine | White Wagtail, 313 |
| Franç.: Sav. | jacobine | Hooded Crow, 281 |