Thyroid development in ducks.
D000367:Age Factors; D000818:Animals; D002452:Cell Count; D004372:Ducks / Q000033:anatomy & histology*; D005260:Female; D008297:Male; D008722:Methods; D009929:Organ Size; D012737:Sex Factors; D013961:Thyroid Gland / Q000166:cytology / Q000254:growth & development*