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Bird Respiration, Air Sacs & Lungs: How A Bird Breathes Explained
The comparative physiology of respiratory mechanisms. Respiration. RESPIRATION IN AIR 71 fly (Apteryx, Penguins) show these adaptations in a greatly reduced form. The lungs of birds are small and compact. They
Respiratory system - Wikipedia
Sac, petite Besace de survie Édition "Respire", simili, velours, tissus d'ameublement , motif violette - Les créations de la salamandre