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Week 1
December 4

Image 18
Category: LAND AND OCEANS
Topic: 102. Invasive Species: What Harm Do They Do?

 


Pink Pigeons

Medium: watercolor
Year Produced: 2009
Dimensions in inches (H x W): 22" x 16"

The Pink Pigeon (Columba mayeri) was once widely distributed throughout the Indian Ocean Island of Mauritius. In 1986 there were only twelve pigeons left. The destruction of native forests on a massive scale and the introduction of a staggering list of non-native mammalian predators have all contributed to the decline of the Pink Pigeon. The introduced Crab-eating Macaques, Feral cats and Mongoose are all efficient bird killers. Pink Pigeons evolved in the absence of mammalian predators and have no natural defence against these introduced species.

Other main reasons for the decline have been habitat loss in favour of economic development and degradation caused by invasive exotic weed species, primarily Chinese Guava (Psidium cattleianum) and the privet (Ligustrum robustum var. walkeri). These invade and choke the forest, thus preventing the regeneration of native plant species which seeds are the food source for the pigeons.

Successful conservation efforts have lead to the growing population of these beautiful birds which number now around four hundred individuals. I made this watercolor after my visit to Mauritius in 2009.

 
   
   
   
   
   
   
   
   

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