A land iguana reaches for some leaves to eat on North Seymour Island in the Galapagos Islands of Ecuador. Land iguanas were introduced to North Seymour Island in the early 1930s from the nearby island of Baltra, where they were dying out. In 1954, land iguanas went extinct on Baltra due to habitat loss and predation from introduced species, but they have been successfully re-introduced.
The land iguana is a relatively new inhabitant on North Seymour Island in the Galapagos Islands of Ecuador. Until the early 1930s, no land iguanas lived on North Seymour, even though it’s the perfect habitat. Land iguanas had thrived on nearby Baltra Island, but they were dying out due to a number of factors, including predation by introduced species and loss of habitat from voracious goats, and in the early 20th century the construction of an air base hastened their demise.
The Hancock Expedition (see link below) moved land iguanas to North Seymour, which had a similar environment to Baltra. Nearly 2,500 land iguanas now live on North Seymour, according to a 2014 census by the Galapagos National Park (GNP). North Seymour Island hosts the largest nesting site in the Galapagos of the magnificent frigate bird. Blue-footed boobies also nest there. Sea Lions and marine iguanas make their home on this island.
A land iguana seeks shade from the fierce midday sun on North Seymour Island in the Galapagos
In 1980, several iguanas from North Seymour were brought to the Iguana Center on Santa Cruz for breeding and in 1991, the first 35 young land iguanas were reintroduced to Baltra, where they now thrive as the habitat has been greatly improved. We saw one of these Balta iguanas when our airport shuttle bus stopped to allow one to cross the road.
According to our guide, iguana eggs and young iguanas are removed from North Seymour and taken to Baltra, but the older iguanas will live out their lives on the island. Eventually all iguanas will be gone from North Seymour Island, he said. I haven’t found any information to confirm this, although it seems reasonable that conservationists would want the island returned to its original state as much as possible.
On islands in the Galapagos where tortoises and iguanas live, prickly pear cacti have evolved tall, tough trunks, making it harder for these animals to eat the pads and fruits.
One of the foods that iguanas eat is the prickly pear cactus. On North Seymour, where there are no tortoises and only recently iguanas, the prickly pear cacti are low to the ground. On other islands where tortoises and iguanas are native, the cactus trunks are tall and tough, an evolutionary change that makes it harder for iguanas and tortoises to eat the tasty pads and fruits.
The iguana population is being restored to Baltra Island in the Galapagos Islands, Ecuador. Baltra is a small, flat island, which was used as an air base and is now the home of the main airport for the Galapagos.
Iguanas live in Simon Bolivar Park, Guayaquil, Ecuador, where they are fed every day by the park staff. Here, they enjoy some lettuce.
”The love for all living creatures is the most noble attribute of man.”
– Charles Darwin
A trio of iguanas have taken a prime spot in Simon Bolivar Park in Guayaquil, Ecuador. Hundreds of iguanas live in the park, where they are fed and taken care of by park staff.