Gonadal hormone concentrations in northern phalaropes in relation to nuptial plumage.
D000818:Animals; D001717:Birds / Q000378:metabolism*; D004958:Estradiol / Q000378:metabolism*; D005241:Feathers; D005260:Female; D008297:Male; D013739:Testosterone / Q000378:metabolism*
D013739:Testosterone; D004958:Estradiol