[Answer] Which of these common birds was once 6 feet tall?

Step 1 : Introduction to the question "Which of these common birds was once 6 feet tall?"

...1. Pheasants 2. Parakeets 3. Pigeons 4. Penguins

Step 2 : Answer to the question "Which of these common birds was once 6 feet tall?"

Penguins - If you find penguins to be cute and cuddly creatures, that might not be the case should they be triple the size. Researchers say one penguin species that lived around 60 million years ago in the Antarctic did, in fact, grow to that height. Prior to the continental drift, New Zealand was home to the Kumimanu biceae species, which topped out at 6 feet and weighed some 220 pounds. Comparatively, the tallest penguin in existence today is the Emperor Penguin, which grows up to 48 inches. In New Zealand, the smallest species of penguin living today is a petite 13 inches. Why did the gargantuan penguins become extinct? Because during the Paleocene era, smaller land creatures were often more successful because they could survive on less and could spread out to more diverse landscapes and habitats.:

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