Blue-footed boobies are aptly named, and males take great pride in their fabulous feet. During mating rituals, male birds show off their feet to prospective mates with a high-stepping strut.

Great blue herons' size (3.2 to 4.5 feet) and wide wingspan (5.5 to 6.6 feet) make them a joy to see in flight. They can cruise at some 20 to 30 miles an hour. Though great blue herons hunt alone ...