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Kirtland's Warbler 2


Kirtland's Warbler 2
Photo Information
Copyright: PETER TAMAS (sirianul) Silver Note Writer [C: 0 W: 0 N: 509] (3544)
Genre: Animals
Medium: Color
Date Taken: 2013-06-07
Categories: Birds
Camera: Canon 1 D X, Canon 600mm f/4 II + Canon 2.x III conve
Exposure: f/11, 1/1250 seconds
Details: Tripod: Yes
More Photo Info: [view]
Photo Version: Original Version, Workshop
Date Submitted: 2013-06-29 14:36
Viewed: 1948
Points: 2
[Note Guidelines] Photographer's Note
Kirtland's Warbler (Setophaga kirtlandii) is a small songbird of the New World warbler family (Parulidae), named after Jared P. Kirtland, an Ohio doctor and amateur naturalist. Nearly extinct just 50 years ago, it is well on its way to recovery. It requires large areas (> 160 acres) of dense young jack pine for its breeding habitat. This habitat was historically created by wildfire, but today is primarily created through the harvest of mature jack pine, and planting of jack pine seedlings.

Since the mid-19th century at least it has become a restricted-range endemic species. Almost the entire population spends the spring and summer in the northeastern Lower Peninsula of Michigan and winters in The Bahamas.
As global climate changed out of the ice age through the last 10 millennia or so, Jack Pine, and consequently also Kirtland's Warbler, shifted their habitat north. As the Kirtland's Warbler—and Parulidae in general—is not able to expand into subarctic climate well, most Jack Pine woods are too far north for the species. Moreover, the Great Lakes, which formed before the receding ice, were an obstacle for its spread. Kirtland's Warbler found itself blocked by the expanse of water, while the cold-hardy Jack Pine expanded its range as far as the Northwest Territories.

With European settlement of North America progressing in earnest, much of the forest in the southern Great Lakes region was cut away, never to be restocked. Kirtland's Warbler became trapped on the northern Lower Peninsula. It may or may not have occurred in Dr. Kirtland's home state of Ohio in recent times, but if it did it would seem to have been extirpated from the state around the time when its namesake himself died in 1877. What habitat there might have been was cleared away in the latter half of the 19th century, and certainly the bird was not breeding there anymore in 1906. Kirtland's Warblers used to breed in Ontario but have not done so since the 1940s. By the mid twentieth century its numbers had crashed to near-extinction. The Kirtland's Warbler population reached lows of probably less than 500 individuals around the 1970s, and in 1994 only 18 km² of suitable breeding habitat was available.


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Critiques [Translate]

Hermosa captura de esta "Reinita de Kirtland" en pleno canto, muy bien acompañado de ramitas de conífera, recortándose el conjunto sobre un delicado y esfumado fondo oliváceo. La verdad que es una fotografía que debería haber recibido más apoyo de la crítica. Es cierto que tiene algunos detalles que pueden llegar a objetarse en la composición, pero no deja de ser una bella toma.
¿Que puedo, humildemente, aportar? Básicamente limitaría el espacio ocioco en la parte superior de la obra, y un poco menos en ambos costados y en la base. Normalmente trato que si existe una rama, hoja o flor en un extremo de la foto (en este caso en el ángulo inferior izquierdo)ésta alcance a verse completa, hasta su extremo. Finalmente una inflorescencia molesta sobre el pecho del pájaro, quizás moviéndonos un poco podríamos evitarla al momento de la captura.

Tu composición me interesó tanto que intenté un simple workshop que intenta aportar un grano de arena.

Un abrazo, Peter.

Desde Argentina, Hernán Bortondello.

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