You have birds whose names include archaic language (flammulated, cinereous, rufescent),
If archaic names were changed to equivalent modern words, few birders would be confused. This should be the least controversial change. For European birds it could be:
Ferruginous Duck Aythya nyroca -
Chestnut Duck
Harlequin Duck Histrionicus histrionicus -
Clown Duck
Demoiselle Crane Anthropoides virgo -
Elegant Crane
Sociable Lapwing Vanellus gregarius -
Social Lapwing
Semipalmated Plover Charadrius semipalmatus -
Web-footed Plover
Pectoral Sandpiper Calidris melanotos -
Band-breasted Sandpiper
Semipalmated Sandpiper Calidris pusilla -
Web-footed Sandpiper
Jack Snipe Lymnocryptes minimus -
Little Snipe
Pomarine Skua Stercorarius pomarinus -
Spoon-tailed Skua
Glaucous-winged Gull Larus glaucescens -
Gray-winged Gull
Glaucous Gull Larus hyperboreus -
Glacier Gull
Roseate Tern Sterna dougallii -
Rosy Tern
Intermediate Egret Ardea intermedia -
Middle Egret
Squacco Heron Ardeola ralloides -
Silky Heron
Striated Heron Butorides striata -
Streaked Heron
Pallid Harrier Circus macrourus -
Pale Harrier
Isabelline Shrike Lanius isabellinus -
Sandy Shrike
Sombre Tit Poecile lugubris -
Brownish Tit
Bimaculated Lark Melanocorypha bimaculata -
Two-spotted Lark
Ring Ouzel Turdus torquatus -
Ringed Thrush
Cinereous Bunting Emberiza cineracea -
Grayish Bunting
Striolated Bunting Emberiza striolata -
Striped Bunting
Rustic Bunting Emberiza rustica -
Rusty Bunting
Subalpine Warbler Sylvia cantillans -
Hill Warbler
Plumbeous Redstart Phoenicurus fuliginosus -
Gray Redstart
Isabelline Wheatear Oenanthe isabellina -
Pale Wheatear
Razorbill Alca torda -
Common Auk
Semicollared Flycatcher Ficedula semitorquata -
Balkan Flycatcher
Clamorous Reed Warbler Acrocephalus stentoreus -
Noisy Reed Warbler
Lanceolated Warbler Locustella lanceolata -
Streaked Warbler
Bay-breasted Warbler Setophaga castanea -
Rusty-breasted Warbler
Western Orphean Warbler Sylvia hortensis -
Fluting Warbler
Eastern Orphean Warbler Sylvia crassirostris -
Eastern Warbler
Much easier to the tongue, isn't it? And it helps that many archaic names are calques of Latin or other foreign language used by people knowing little about the actual bird. For example Ouzel is a corruption of German Amsel.