Trinidad was connected to the South American mainland during the last ice age through a land bridge. When the ice sheets receded, the water levels rose and submerged the channel. Trinidad is now separated from Venezuela by the Columbus Channel in the south and the Bocas del Dragón, the Dragon's Mouths, in the north.
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Alouatta macconnelli - The Guianan red howler monkey is well known for its roaring howl, the first tactic for defending territorial claims. Their howls are common during early morning or late afternoons and prior to the beginning of rain showers. Howlers feed primarily on leaves and fruit. When the opportunity arises, they will also take on bird eggs and small invertebrates. There are three species of howler monkeys in the Americas with the Guianan red howler being native to the Guinana Shield northeastern region of South America.
