Now on ScienceBlogs: Surveying the "integrative medicine" landscape (2012 edition)

ScienceBlogs Book Club: Inside the Outbreaks

Living the Scientific Life (Scientist, Interrupted)

Written by an evolutionary biologist/ornithologist who writes about E3 -- Evolution, Ecology and Ethology -- and the subtle relationships between these phenomena, especially in birds.

GrrlScientist Tweets:

GrrlScientist's New Blog:

Search This Blog

Valuable Information

Concisus Vitae

GrrlScientist is an evolutionary biologist and ornithologist who loves to write about "E3": evolution, ethology and ecology and the subtle relationships between these fields, especially in birds.

GrrlScientist's new blog can be accessed through any one of these five domain names: GrrlScientist.net, grrlscientist.org, grrlscientist.info, grrlscientist.com, or grrlscientist.us (keep in mind that, in the future, these domains may point to different places). GrrlScientist's current blog home is at her NATURE Network blog, Maniraptora.

Online interviews with GrrlScientist: Kolibri Expeditions, ScienceOnline09, Nature Blog Network and ScienceBlogs. More biographical information about GrrlScientist.

Follow GrrlScientist:

GrrlScientist's banner was designed by graphic artist, Jeff Hebert, whose other work can be viewed at his site, Hero Machine.





Recent Posts

Recent Comments

$upport This Scholar

Worthy Causes to $upport

Meters and Counters

« Zircons: Time Capsules from the Early Earth | Main | SMG/Sb Ethical Lapse Claims Another 'SciBling' »

Mystery Bird: Reddish Egret, Egretta rufescens

Topic Categories: BirdingEducationMystery BirdsPhotographyTeachingTravel
Posted on: July 19, 2010 9:59 AM, by "GrrlScientist"

tags: , , , ,

[Mystery bird] Reddish Egret, Egretta rufescens, photographed at Quintana Neotropical Bird Sanctuary, Brazoria County, Texas. [I will identify this bird for you in 48 hours]

Image: Joseph Kennedy, 15 July 2010 [larger view].

Nikon D200, Kowa 883 telescope with TSN-PZ camera eyepiece 1/1250s f/8.0 at 1000.0mm iso400.

Please name at least one field mark that supports your identification.

This lovely species was nearly exterminated in the US by hunters who killed the birds for their plumes. The population is small and still recovering, albeit very slowly.


Review all mystery birds to date.

Share on Facebook
Share on StumbleUpon
Share on Facebook
Find more posts in: Life ScienceEducation

Comments

1

What a lovely picture!

The black legs made me try to remember the who has black and who has yellow legs. So then I started looking at my book. It's Great Egrets that have black legs.

But then, the bill. The bill looks two-tone to me, and don't Great Egrets have a yellowish bill? And once I'm doubting myself, I'm wondering about the length of the neck. Is it long enough relative to the body for a Gre Egret?

So as I flipped through my Sibley's, there's a white morph of a reddish egret that has a two-tone bill (yellowish near the face, darker near the tip). There's also a hint of fluff at the front, bottom of the neck. And the location seems right for a reddish egret.

Posted by: bardiac | July 19, 2010 10:31 AM

2

Snowy Egret. I see them in the canal behind my house sometimes, and I grew up near a bird sanctuary (Avery Island, LA). The Great Egret has a yellow/orange bill.

Posted by: tek | July 19, 2010 11:09 AM

3

Perhaps a Great White Egret (I didn't know there were differences from that to Snowy Egret) - Snowy should have some crest and breast feathers. This egret - British? - appears closer to match. Is this the same one?
http://www.thewesternisles.co.uk/birds/great-white-egret.htm

Posted by: SaraJ | July 19, 2010 11:40 AM

4

Well, it isn't a Snowy Egret. Snowies have yellow feet and this guy has black feet. It's difficult to determine size from the photo, but I'll guess it's a Great American egret, rather than our common Cattle egret.

Posted by: D Hopkins | July 19, 2010 11:42 AM

5

I think bardiac got it. White phase of the Reddish Egret, due to two-tone bill and black legs with no yellow on the foot. The immature Little Blue Heron is white with dark legs, but they are greenish, not black.

Cattle Egret is a stockier bird with a shorter, thicker bill without dark tip, Great White Heron has yellow legs, and belongs in South Florida, not Texas.

Posted by: BaldApe | July 19, 2010 11:54 AM

6

I'm having some doubts, now, though. (As always.) GrrlScientist's comment talks about the population being small and still recovering. But the Cornell All About Birds site says that the IUCN lists the Reddish Egret's conservation status as being "Least Concern." Hmmm.

(http://www.allaboutbirds.org/guide/Reddish_Egret/id)

Posted by: bardiac | July 19, 2010 12:09 PM

7

But then I did a search on the IUCN site, and it says the Reddish Egret is now listed as "near threatened." (http://www.iucnredlist.org/apps/redlist/details/144657/0)

The status seems to have changed in 2009.

Dog, I love the web sometimes!

Posted by: bardiac | July 19, 2010 12:12 PM

8

White-phase reddish egret and, yes, reddish egret was nearly extirpated from the US by plume hunters. Its range has always been limited so the impact on this species of plume hunting was greater than for great egrets or snowy egrets (not necessarily greater than the impact on certain populations of these, but the last two occur over much of north america and while severely impacted, didn't come as close to extirpation as did reddish egret).

It's worth pointing out the the original Audubon Societies were formed to protect egrets from plume hunting. Here in Oregon, for instance, Teddy Roosevelt created the Malheur National Wildlife Refuge, and Oregon Audubon was founded (in 1902) primarily to pay for a game warden to enforce the ban on plume hunting at Malheur Lake.

One game warden was killed in action, so to speak, somewhere in the south eastern part of the US. The protection of egrets by the federal government in partnership with Audubon Societies didn't go down well with plume hunters.

Posted by: dhogaza | July 19, 2010 12:27 PM

9

This is why I don't participate in ID-ing. Even the experts are confused.

Posted by: Tabor | July 19, 2010 12:35 PM

10

Another mark to rule out Little Blue Heron is that the primaries appear to be white to the tips. In Little Blues, it is only the juveniles that are all white -- by their second summer they have blue patches. But even as juveniles, they have dark tips to the outer primaries. This bird doesn't appear to have them.

Also, the base to the bill should be bluish in juvenile Little Blues, not pinkish as this bird shows.

Posted by: psweet | July 19, 2010 1:01 PM

11

One field mark of Great (White) Egret is that the gape goes back to behind the eye. I find this to be the best way to id them. This bird has the gape ending below the eye. As Intermediate Egret doesn't occur in Texas I hand it to Bardiac, well spotted.

Posted by: Adrian | July 19, 2010 2:50 PM

12

That can't be a bird on or near the Gulf coast — it's not covered in oil.

Therefore, it must be an orange. Or possibly an extinct volcano.

Posted by: blf | July 19, 2010 3:06 PM

13

Tabor, this is exactly why we do it. It's a learning curve, even for the "experts". What I learn here helps me when I'm in the field,either on my local patch or on trips.

Posted by: Adrian | July 19, 2010 4:52 PM

14

it'll always be a mystery..
8)

Posted by: ndrew | July 20, 2010 2:35 AM

15

Looks awfully like a Little Egret, Ardea garzetta, which I regularly see here in Australia.

Name the field marks?
Black legs, black beak with yellow near eyes, and a tiny black line that is under the eye which I think I can see in your photo.
Its a breeding bird but doesn't have the plumes so maybe moving in or out of breeding season.
Dunno if they visit Texas, but thats the bird I reckon it is.
My source is Simpson and Day 'Field Guide to the Birds of Australia".
However I'm just an amateur so maybe I'm miles off [literally and geographically].
But what the hell I'll commit myself to that as its identity.

Posted by: hannah's dad | July 20, 2010 3:44 AM

16

OK I started feeling a little foolish about suggesting an Oz bird for the identity.
But then I found this:
http://www.google.com.au/imgres?imgurl=http://www.jaxshells.org/morph.jpg&imgrefurl=http://www.jaxshells.org/morph.htm&h=523&w=550&sz=128&tbnid=pV15yZAzwM2NaM:&tbnh=126&tbnw=133&prev=/images%3Fq%3Degretta%2Brufescens&hl=en&usg=__bS72zO0St608zyz54zOtS1GuNdc=&sa=X&ei=TFtFTPTOBcm2cfuW7O8E&ved=0CCAQ9QEwBA
Which is pretty close to the white phase rufescens.

But then I found this:

http://en.wikipedia.org/wiki/Little_Egret
Which says this:

"Colonization of the New World
The Little Egret has now started to colonize the New World. The first record there was on Barbados in April 1954. It began breeding on the island in 1994. Birds are seen with increasing regularity and have occurred from Suriname and Brazil in the south to Newfoundland and Quebec in the north. Birds on the east coast of North America are thought to have moved north with Snowy Egrets from the Caribbean."

.
The first bird book I ever owned
"Field Guide to the Birds of North America" [Pub. Golden] 1983, wasn't much help cos it shows the white phase of rufescens as having a very short black tip on its beak, much shorter than the photo above, and very fluffy neck and head feathers.

But really I suppose it has to be rufescens

Anyway I just came here from Pharyngula cos of the Seed business and thought I'd check this site out.

Nice.
I'll be back [probably as a lurker].

Posted by: hannah's dad | July 20, 2010 4:28 AM

17

Hannah's Dad -- while there are recent records for Little Egret in the US, this bird has several things wrong. The base of the bill should be much darker, with the yellow confined to the lores. The feet in an adult should be yellow, and any bird too young to show yellow feet should also show dark lores. Finally, Little (and Snowy) should have a more slender bill than this bird.

I suspect that your misgivings about the bill pattern mean that this bird is about 2 years old -- apparently it takes a while for the bill to achieve its final pattern.

Posted by: psweet | July 20, 2010 8:59 AM

18

Cool.
Thanks psweet.

Posted by: hannah's dad | July 20, 2010 9:48 AM

ScienceBlogs

Search ScienceBlogs:

Go to:

Advertisement
Follow ScienceBlogs on Twitter

© 2006-2011 ScienceBlogs LLC. ScienceBlogs is a registered trademark of ScienceBlogs LLC. All rights reserved.