Nature — S33E14 — Animal Homes: Animal Cities

00:00:06 NARRATOR: They're our planet's first builders,

00:02:29 Every spring, puffins congregate in giant nesting colonies.

00:05:03 One couple has picked a good spot

00:07:06 the privacy that all new parents want,

00:09:20 sharing a home is the best strategy for survival.

00:12:13 And not just during a fire.

00:14:51 Their tangled,

00:17:22 the spiders will have to abandon this nest

00:19:36 Others help with home repairs

00:21:47 Australia's Great Sandy Desert is much dryer than east Africa.

00:24:05 Back in Scotland,

00:26:25 Each puffin may circle around several times

00:28:35 That is crazy!

00:30:55 they've had to bend a few rules to make a go of it.

00:32:59 they'll keep one and reject the other,

00:35:37 It's meant to be an emergency release.

00:37:54 MORGAN: So, that's why we see

00:40:01 he's a competitor.

00:42:08 We've seen animals that live together,

00:44:13 So, they're not bringing them back to feed the family.

00:45:57 Oh, wow!

00:47:54 It's almost like standing on top of Chicago or something.

00:49:35 their collaboration so seamless,

00:52:30 visit pbs.org.