what factor is responsible for the reduction in the population of the local crow the alala
Hawaiian crow
The Hawaiian crow faces an ample number of threats in the wild , which are considered contributing factors to their extinction in the wild . Small population size makes the species more vulnerable to environmental fluctuations , leading to a higher likelihood of inbreeding , which could result in lethal deformities . Unlike most crows , Hawaiian crows did not adapt well to human presence . Persecution by humans is another threat to their survival . Farmers have shot ʻalalā because they were believed to disturb crops . Illegal hunting has continued even after legal protection was granted to the crows . Humans have also caused habitat degradation and deforestation through agriculture , ranching , logging , and non-native ungulates . Loss of canopy cover exposes the ʻalalā to dangerous predators . Chicks are vulnerable to tree - climbing rats , and after they leave their nests , to cats , dogs , and mongooses . Deforestation also increases soil erosion and the spread of invasive plants and mosquitoes . This directly relates to the primary cause of the Hawaiian crow 's extinction , disease . 
The Hawaiian crow faces an ample number of threats in the wild , which are considered contributing factors to their extinction in the wild . Small population size makes the species more vulnerable to environmental fluctuations , leading to a higher likelihood of inbreeding , which could result in lethal deformities . Unlike most crows , Hawaiian crows did not adapt well to human presence . Persecution by humans is another threat to their survival . Farmers have shot ʻalalā because they were believed to disturb crops . Illegal hunting has continued even after legal protection was granted to the crows . Humans have also caused habitat degradation and deforestation through agriculture , ranching , logging , and non-native ungulates . Loss of canopy cover exposes the ʻalalā to dangerous predators . Chicks are vulnerable to tree - climbing rats , and after they leave their nests , to cats , dogs , and mongooses . Deforestation also increases soil erosion and the spread of invasive plants and mosquitoes . This directly relates to the primary cause of the Hawaiian crow 's extinction , disease .
The Hawaiian crow faces an ample number of threats in the wild, which are considered contributing factors to their extinction in the wild.
 Deforestation also increases soil erosion and the spread of invasive plants and mosquitoes.
 This directly relates to the primary cause of the Hawaiian crow's extinction, disease.
The Hawaiian crow faces an ample number of threats in the wild , which are considered contributing factors to their extinction in the wild . Deforestation also increases soil erosion and the spread of invasive plants and mosquitoes . This directly relates to the primary cause of the Hawaiian crow 's extinction , disease .
The Hawaiian crow faces an ample number of threats in the wild , which are considered contributing factors to their extinction in the wild . Persecution by humans is another threat to their survival . Farmers have shot ʻalalā because they were believed to disturb crops, and the illegal hunting has continued . Loss of canopy cover exposes the ʻalalā to dangerous predators . Deforestation also increases soil erosion and the spread of invasive plants and mosquitoes . This directly relates to the primary cause of the Hawaiian crow 's extinction , disease .
The Hawaiian crow faces an ample number of threats in the wild , which are considered contributing factors to their extinction in the wild . Persecution by humans is another threat to their survival . Farmers have shot ʻalalā because they were believed to disturb crops . Illegal hunting has continued even after legal protection was granted to the crows . Loss of canopy cover exposes the ʻalalā to dangerous predators . Deforestation also increases soil erosion and the spread of invasive plants and mosquitoes . This directly relates to the primary cause of the Hawaiian crow 's extinction , disease .