A literal observation that birds with attractive or well-kept feathers appear healthy or striking.
2.
General Englishproverbialfigurative
Outward appearance, clothing, or adornment strongly influences other people's judgments of a person or thing; good appearance confers perceived worth or respectability.
Examples:
EN: You know what they say: fine feathers make fine birds.
ES: Pueden decir lo que quieran, pero un traje te da el aspecto de un caballero
EN: They say fine feathers make fine birds. {馬åã"ãè¡£è£ }
ES: Dicen que las plumas finas hacen pájaros finos.
EN: There is one idiom: fine feathers make fine birds.
HI: अंगूठे का एक महत्वपूर्ण नियमः स्वस्थ पक्षी खुद को तैयार करते हैं।