Modifiers matching duck:

• bullying,
• paranoid,
• jealous,
• small,
• tenacious,
• optimistic,
• pushy,
• wild,
• insecure,
• zany,
• determined,
• daffy,
• breeding,
• rare,
• lisping,
• aggressive,
• native,
• larger,
• here,
• common,
• marine,
• large,
• indigenous,
• brash,
• boastful,
• smaller,
• domestic,
• short-tempered,
• unusual,
• slobbery,

Simple categories matching breeding:

• bird,
• creature,
• passerine,
• season,
• animal,
• seabird,
• farm,
• information,
• shorebird,
• characteristic,
• organization,
• predator,
• cattle,
• livestock,
• duck,
• poultry,
• songbird,
• raptor,
• warbler,
• method,
• wildfowl,
• trait,
• vertebrate,
• facility,
• news,
• structure,
• waterbird,
• rodent,
• mammal,
• pet,
• waterfowl,
• system,
• antelope,