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Galapagos Penguin Video Stock Footage
The average Galápagos penguin is 49 centimetres (19 in) long and 2.5 kilograms (5.5 lb) in weight. It is the second smallest species of penguin, after the little penguin. Galápagos penguins have a black head with a white border running from behind the eye, around the black ear coverts and chin, to join on the throat. They have grey-black upperparts and whitish underparts, with two black bands across the breast, the lower band extending down the flanks to the thigh. Juveniles differ in having a wholly dark head, greyer on side and chin, and no breast band. Females are smaller than males. Air temperatures in the Galápagos remain in the range 15–28 °C (59–82 °F). During El Niño seasons, the penguins defer breeding because their food becomes less abundant this makes the chances of raising offspring successfully unfavorable compared to the chances of dying in the attempt. The penguins usually breed when the sea surface temperature is below 25 °C (77 °F). The strong tropical sun is problematic for this species. Their primary means of cooling off is going in the water, but other behavioral adaptations for thermoregulation come into play when they must remain on land. One method involves stretching out their flippers and hunching forward to keep the sun from shining on their feet, which exchange heat rapidly because they have high blood flow and lack insulation. Another method is to pant, using evaporation to cool the throat and airways. Galápagos pe...
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