Fossilized giant penguin feathers reveal color, feather structure of ancient birds
A North Carolina State University researcher is part of a team that has discovered fossilized feathers from a giant penguin that lived near the Equator more than 36 million years ago. These feathery fossils reveal color patterns in an ancient extinct penguin species, and offer clues to how modern penguin feathers evolved. The penguin in question – dubbed Inkayacu paracasensis, or Water King – dates from the late Eocene period and stood almost five feet tall. The fossil was discovered near the Paracas Reserve, located along the eastern coastline of Peru. A research team led by Dr. Julia Clarke from the University of Texas at Austin, which included scientists from NC State, Yale University and the University of Akron, discovered the feathers while preparing the specimen.
The researchers' findings appear in the Sept. 30 edition of Science.
"We recovered feathers still attached to the wing, as well as some smaller body contour feathers, which in modern-day penguins serve to waterproof them and regulate their body temperature," says Dr. Dan Ksepka, NC State research assistant professor of marine, earth and atmospheric sciences, research associate with the N.C. Museum of Natural Sciences, and co-author of the paper. "In terms of size, these feathers are really no larger than the ones you would find on a 'normal-sized' penguin; in fact, some small modern penguins' feathers are longer than the ones on this animal."
By looking at the fossilized feathers' melanosomes, tiny pigment-carrying structures within cells that give bird feathers their hues and our hair its color, team members from Yale and Akron determined that unlike modern penguin feathers, which are predominately black and white, I. paracasensis feathers were a softer gray or reddish-brown color – shades associated today with penguin babies, not adults.
"Some of the feathers we found were loose, so we can't totally 'color in all the lines' on the penguin yet, or tell which feathers may have been part of a brighter display pattern on the bird, like the eye and neck bands on some modern species of penguin," Ksepka says. "But features of the bones tell us that this particular fossil was a fully-grown adult, not a juvenile, so finding brown and gray colors was a surprise."
The researchers also found that the fossil's melanosomes were much smaller than those found in modern penguins, leading to questions about how and why penguin feathers changed over time.
According to Ksepka, "The fossil record shows us that Inkayacu and other giant penguins were very successful during the Eocene – they ranged all over the Southern Hemisphere. But for some reason, they didn't continue to thrive into the present, and all of the giant penguins are now extinct. By looking at the way these fossilized feathers differ from those of living penguins, we may be able to learn more about why species like Inkayacu became extinct, while the smaller modern species continue to survive today."
Source: North Carolina State University
Articles on the same topic
- Fossilized giant penguin reveals unusual colors, sheds light on bird evolutionThu, 30 Sep 2010, 14:32:30 EDT
- Ancient penguin was 5 feet tallfrom LA Times - ScienceFri, 1 Oct 2010, 19:14:23 EDT
- Fossilised giant penguin feathers reveal colour, feather structure of ancient birdsfrom Science CentricFri, 1 Oct 2010, 8:07:25 EDT
- Pictures: Five-Foot Fossil Penguin Revealedfrom National GeographicThu, 30 Sep 2010, 23:49:15 EDT
- Remains of Ancient Giant Penguin Unearthedfrom CBSNews - ScienceThu, 30 Sep 2010, 20:21:16 EDT
- Fossil of giant penguin found in Perufrom UPIThu, 30 Sep 2010, 20:07:12 EDT
- A giant penguin plumed in earth tonesfrom Sciencenews.orgThu, 30 Sep 2010, 19:14:27 EDT
- No Tuxedo - Prehistoric Giant Penguin Inkayacu Paracasensis Was Brown And Greyfrom Scientific BloggingThu, 30 Sep 2010, 17:56:10 EDT
- Giant Prehistoric Penguin Found, Sported Splashes of Redfrom National GeographicThu, 30 Sep 2010, 16:21:08 EDT
- Ancient penguin stood 1.5 metresfrom CBC: Technology & ScienceThu, 30 Sep 2010, 16:14:10 EDT
- Remains of Ancient Giant Penguin Unearthedfrom CBSNews - ScienceThu, 30 Sep 2010, 15:49:10 EDT
- Video: 5-Foot Penguin Fossil Discoveredfrom National GeographicThu, 30 Sep 2010, 15:35:15 EDT
- Fossilized giant penguin reveals unusual colors, sheds light on bird evolutionfrom Science DailyThu, 30 Sep 2010, 15:28:19 EDT
- How the penguin changed its feathersfrom MSNBC: ScienceThu, 30 Sep 2010, 15:14:32 EDT
- Ancient giant penguin unearthedfrom BBC News: Science & NatureThu, 30 Sep 2010, 15:07:21 EDT
- Giant Penguin Fossil Feathers Give Color Cluesfrom Newswise - ScinewsThu, 30 Sep 2010, 14:49:11 EDT
- Giant penguins with no tux? Fossil feathers say sofrom AP ScienceThu, 30 Sep 2010, 14:42:47 EDT
- Fossilized giant penguin feathers reveal color, feather structure of ancient birdsfrom PhysorgThu, 30 Sep 2010, 14:42:21 EDT
- How Penguins Got Their Water Wingsfrom Science NOWThu, 30 Sep 2010, 14:21:16 EDT
- Extinct Penguin Wore Earth Tones, Fossil Showsfrom NY Times ScienceThu, 30 Sep 2010, 14:21:11 EDT
- Pick up a penguin: remains of giant red species foundfrom The Guardian - ScienceThu, 30 Sep 2010, 14:07:19 EDT
Latest Science NewsletterGet the latest and most popular science news articles of the week in your Inbox! It's free!
Learn more about
Check out our next project, Biology.Net
From other science news sites
Popular science news articles
- Astronomers discover Earth's bigger cousin
- Rice disease-resistance discovery closes the loop for scientific integrity
- Study finds abrupt climate change may have rocked the cradle of civilization
- Computer security tools for journalists lacking in a post-Snowden world
- ALMA witnesses assembly of galaxies in the early universe for the first time
- Rosetta spacecraft sees sinkholes on comet
- Seahorse tails could inspire new generation of robots
- Newly discovered 48-million-year-old lizard walked on water in Wyoming
- Human brain study by UCLA and UK researchers sheds light on how new memories are formed
- UT Arlington team develops new storage cell for solar energy storage, nighttime conversion