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Buff-throated Woodcreeper


Buff-throated Woodcreeper
Photo Information
Copyright: Peter van Zoest (PeterZ) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5137 W: 166 N: 13121] (49139)
Genre: Animals
Medium: Color
Date Taken: 2013-09-17
Categories: Birds
Camera: Nikon D90, Sigma 135-400mm f/4.5-5.6 APO, Digital RAW
Exposure: f/5.6, 1/200 seconds
Details: Tripod: Yes
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2014-05-19 7:26
Viewed: 1494
Points: 24
[Note Guidelines] Photographer's Note
Another NEW SPECIES FOR TN: the Buff-throated Woodcreeper.

The Buff-throated Woodcreeper (Xiphorhynchus guttatus) is a resident passerine bird found in tropical South America in the Guiana Shield and disjunctly in the northern Atlantic Forest. It formerly included the Cocoa Woodcreeper and the Lafresnaye's Woodcreeper as subspecies. Some authorities retain Lafresnaye's position as a subspecies of the Buff-throated Woodcreeper, but the resulting group is polyphyletic (see Systematics and evolution).

Description
With a total length of 2728 cm, and a weight of c. 64 g, this woodcreeper is, together with Lafresnaye's Woodcreeper, the largest member of the genus Xiphorhynchus. The head, neck, mantle and chest are streaked buff, and the rest of the upperparts, wings and tail are rufous. The underparts are olive-brown. The bill is long, slightly decurved, and hooked at the tip. The upper mandible is dark grey, while the lower mainly is pale greyish-horn. The normal call is a loud chev-re chev-re.

Ecology
Buff-throated Woodcreepers are restricted to humid forest and woodland. The taxa in north-eastern South America (polystictus and connectens) are generally the commonest large woodcreeper within their range, but the nominate taxon (X. g. guttatus), which is retricted to humid tropical Atlantic forest, has a fragmented population and is generally uncommon. They are insectivores which feed on ants and other insects and spiders. It feeds low in trees, usually alone, but groups will follow columns of army ants. The species builds a bark-lined nest in a tree hole or hollow stump and lays two white eggs.

Systematics and evolution
The taxonomy is highly complex. The smaller Cocoa Woodcreeper (X. susurrans) from Central America and northwestern South America was formerly included in this species, but is now normally considered to be distinct. Of the remaining taxa, the pale-billed and buff-streaked guttatoides group (incl. dorbignyanus) and the dark-billed and whitish-streaked eytoni group (incl. vicinalis and gracilirostris) have often been considered separate species, as the Lafresnaye's Woodcreeper (X. guttatoides) and the Dusky-billed Woodcreeper (X. eytoni). While visually very different, these two groups are now known to form a single clade (combined under a "broad" Lafresnaye's Woodcreeper, X. guttatoides) separate from the nominate group (guttatus, polystictus and connectens) of X. guttatus, which instead is closer to X. susurrans. Biogeography and molecular data suggest that the relationship between these subspecies and the taxa now included in X. guttatoides and X. susurrans deserves further study.Depending of the outcome of these studies, the Buff-throated Woodcreeper could be restricted to the southern coastal population, which is endangered by habitat fragmentation, making a change in conservation status necessary.
The most likely evolutionary scenario is that from lower Amazonia, the ancestors of Lafresnaye's Woodcreeper spread west- and southwestwards to the Andes, and those of the Buff-throated and Cocoa Woodcreeper downriver and then along the coast of northern South America, where X. susurrans then branched off as the northern lineage. Indeed, it may be that the trans-Andean forms of the latter may constitute yet another good species, Lawrence's Woodcreeper.

Subspecies
X. g. guttatus (Lichtenstein, 1820). Coastal areas of Paraba to Esprito Santo-Rio de Janeiro border.
X. g. polystictus (Salvin & Goodman, 1883). Orinoco drainage from E Vichada Department northeastwards, via E Venezuela to the Guyanas.
X. g. connectens Todd, 1948. N bank of lower Amazonas from E of Manaus to Amap. Doubtfully distinct from polystictus.

Source: Wikipedia

ramthakur, ellis49, Pitoncle, kinglove, Chiza has marked this note useful
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Critiques [Translate]

Superb original contribution to TN, Peter.
Indeed, this is the very first image of this beautiful bird here.
One can make out that it is a fairly large bird.
You were well positioned to capture it from a perspective that gives a perfect dorsal view of it. With the head turned slightly, we see its eye also in perfect focus.
Thanks for adding another gem from your Brazil collection.
Ram

Hi Peter,
I hope you are well, old friend.
it's very nice to see your fine pictures of all kind of birds from the whole world. :-)
I think you must have travel a lot.
The picture is well composed with a fine POV and stand-out fine from the BG, thanks to the large aperture.
Also well exposed with correct WB and the bird is pretty sharp with fine detail.
Very nice to view.
Regards
Gert

Hallo peter
Weer een super aanwinst voor TN
Super mooie vogel en zo goed te zien hoe hij er uit ziet
prachtige kleuren en mooie compositie
bedankt weer
grlou

Bonsoir Peter,
Agrable valorisation du sujet dans une attitude originale.
A bientt sur TN pour de nouvelles aventures.
Grard

Ciao Peter, great capture of lovely bird in nice pose, excellent sharpness, fine details, splendid light and wonderful natural colors, very well done, my friend, ciao Silvio

Hallo peter
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STONE

Very goo detail and sharp for the interesting bird in pose.

Roberto

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2014-05-20 9:38]

Hi Peter,a new magnificent post in your neverending list of new species on TN,great detail and colors despite the difficult light and location,a great 3D effect too,i like it! Have a nice evening and thanks,Luciano

Hi Peter,
a bit grainy because of ISO but a wonderful pic of this nice bird. Like the position ...
regards
Pierre

Hello Peter

Once again congratulations for this new species on TN,
beautiful photo of the Buff-throated Woodcreeper, fine POV
and framing, beautiful light, excellent focus, sharpness, details, TFS

Asbed

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2754 W: 282 N: 4931] (19883)
  • [2014-05-22 18:44]

Hello Peter,
Congratulations on yet another first for TN!! What a lovely bird with a rather large bill for it's size. Reminds me of the stout bills the kingfishers possess.
I really like it's chocolate and burgundy colored plumage feathers. Captured in an attractive pose which gives us a good look at it's unique features. Well done!!
Ron

  • Great 
  • Chiza Gold Star Critiquer/Gold Note Writer [C: 133 W: 0 N: 474] (5351)
  • [2014-05-25 7:41]

Hola Peter, una especie de lujo, muy dificil para las fotos, me gusta la composicin, el fondo y la luz, adems de la percha y el entorno...saludos.

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