The story
- Proto-Germanic*dalą
- Proto-West Germanic*dal
- Old High Germantal
- Middle High Germantal
- GermanTal
- GermanTaler
- Middle Low Germandāler
- Dutchdaler
- Englishdollar
- Old Englishbridd
- Middle Englishbrid
- Englishbird
- English todaydollarbird
From dollar + bird. Named so because its white spots of wings resemble silver dollar coins.
Etymology from Wiktionary, CC BY-SA 4.0.