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In page Spix's macaw:

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The decline of the species in the 1970s and early 80s is attributed to hunting and trapping of the birds, unsustainable harvesting of the Caraíba trees for firewood, the construction of the Sobradinho Dam above Juazeiro starting in 1974 that submerged the basin woodlands under an artificial lake,[4] and the northward migration of the Africanized bee, which competes for nesting sites.[5]