Aves | 
Anseriformes | 
Anatidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Others; brackish.  Subtropical; 72°N -   47°S, 25°W -   179°E (Ref. 124582)			
			
			
				
			
			
			
				Indo-West Pacific, Eastern Atlantic and the Mediterranean Sea.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm			
			
			
						
			
			
			
			
				
					Non-breeding individuals inhabit swamps, lakes, reservoirs, coastal lagoons and estuaries.  Feeds grass, on the roots, shoots, leaves, stems, seed heads and fruits of other herbaceous marsh vegetation, aquatic plants, and agricultural grain and potatoes (Ref. 107894).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
									
			
			
			
			
			
				Hüppop, O., J. Dierschke, K.-M. Exo, E. Fredrich and R. Hill 2006 Bird Migration and Offshore Wind Turbines. In Ch. 9: 91-117.  Köller, J., J. Köppel and W. Peters (eds.). Offshore Wind Energy, Research on Environmental Impacts.  Springer: Germany. 371 pp. (Ref. 96348)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
			
			
			
			
				Threat to humans  
			
			
				
					  Harmless				
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
  Life cycleReproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
  PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models