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- [36] SOME FEATHER CHARACTERISTICS OF ACUTE FRENCH MOLT IN FLEDGLING BUDGERIGARS (MELOPSITTACUS-UNDULATUS) AUSTRALIAN VETERINARY PRACTITIONER, 1983, 13 (03): : 128 - 128
- [38] SPEECH-PERCEPTION BY BUDGERIGARS (MELOPSITTACUS-UNDULATUS) - THE VOICED-VOICELESS DISTINCTION PERCEPTION & PSYCHOPHYSICS, 1989, 46 (01): : 65 - 71
- [40] RECOGNITION OF INDIVIDUAL NESTING BOX IN BUDGERIGARS, MELOPSITTACUS-UNDULATUS SHAW (AVES, PSITTACIDAE) ZEITSCHRIFT FUR TIERPSYCHOLOGIE-JOURNAL OF COMPARATIVE ETHOLOGY, 1976, 42 (01): : 1 - 11