tag:blogger.com,1999:blog-90527135904934198002024-03-05T18:58:41.338-08:00Porzana Rallus J. David MuñozBlog para los amantes de los rálidos
Blog to share information about small rallidsJ. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-9052713590493419800.post-21426497421158919802016-04-10T13:32:00.003-07:002016-04-10T13:32:52.057-07:00<div style="text-align: center;">
CRAKES ON PASSAGE IN BRAZO DEL ESTE, SEVILLA, SW SPAIN</div>
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From late February but specially in March an April crakes occur in this natural park close to Sevilla city and just in the area of Doñana. A very transformed area into rice paddies and other crops but still with natural wetlands inside the farmlands. In the eastern margin of the river Guadalquivir. In fact, it´s the only place in many kilometers with natural habitats in the left margin of the old delta.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-R30FeI6MXiBbU9BGCjt0tCevwaWsFhZkUEa4A-49Ur4qLagzWTql5NiE6aLaY-3_NGBT6_XdxXvvnxSWG4NyrTqiB_3Hd8DRcJQh0d3Zg9WXUWsAK7epPIGSA54TneLMf1wg_S5ag5g/s1600/20150701_200402.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="192" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-R30FeI6MXiBbU9BGCjt0tCevwaWsFhZkUEa4A-49Ur4qLagzWTql5NiE6aLaY-3_NGBT6_XdxXvvnxSWG4NyrTqiB_3Hd8DRcJQh0d3Zg9WXUWsAK7epPIGSA54TneLMf1wg_S5ag5g/s320/20150701_200402.jpg" width="320" /></a></div>
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<i>three views of Brazo del Este, Sevilla, SW Spain</i></div>
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Trapping sessions for ringing are been carrying out by the author. The first results encourage to keep on the investigation about these species although large patience is needed.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBfIaVl4aaAoGuKNaGREMwF_sBCSAth3UWRknyW5WjZf7loH46xWJaoHFR7omwVi0yUlx87Y3ADUbiX7IdFnJro3uqj1KXQ0dq1S9cvCfdek-KheBYjL7bjPYn9Qeadqc2Wbm4le8NSVo/s1600/20160311_200345.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBfIaVl4aaAoGuKNaGREMwF_sBCSAth3UWRknyW5WjZf7loH46xWJaoHFR7omwVi0yUlx87Y3ADUbiX7IdFnJro3uqj1KXQ0dq1S9cvCfdek-KheBYjL7bjPYn9Qeadqc2Wbm4le8NSVo/s320/20160311_200345.jpg" width="192" /></a></div>
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<i>Spotted crake 11 March 2016</i></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJVkyht2BWEOoSafHutn1Z8Ggn0MSPnHpcQkncBpV6_GavPWlGcH_NLS9XQ6jfxECjTCqt5WptG0GUmlClLWy22-RbAk1J8YsAXyWEt00HOL46qwH0DJKeGLF3WskrsBlSHwnHlv5Tveg/s1600/20160401_193857.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJVkyht2BWEOoSafHutn1Z8Ggn0MSPnHpcQkncBpV6_GavPWlGcH_NLS9XQ6jfxECjTCqt5WptG0GUmlClLWy22-RbAk1J8YsAXyWEt00HOL46qwH0DJKeGLF3WskrsBlSHwnHlv5Tveg/s320/20160401_193857.jpg" width="192" /></a></div>
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<i>Spotted crake 1 April 2016</i></div>
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<i>Kind regards from Sevilla. J. David</i></div>
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La migración de polluelas en la zona del Brazo del Este, espacio natural al sur de Sevilla, única zona con habitats naturales en muchos kilómetros de la margen izquierda del río Gudalquivir, es especialmente visible en Marzo y Abril. Se están llevando a cabo jornadas de trampeo por parte del autor que arrojan los primeros resultados. Se muestran dos fotos de la primeras polluelas pintojas capturadas para anillamiento. Saludos desde Sevilla. J. David.</div>
<br />J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-80172690281674842572015-09-13T16:56:00.000-07:002015-09-13T16:56:06.370-07:00<i>ZAPORNIA PUSILLA</i> (BAILLON´S CRAKE) RINGED IN BRAZO DE ESTE, SEVILA, SW SPAIN<br />
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On 2nd August I catch and ring this juvenie Bailon´s crake<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqdoeGNY67JmYEfgv7QiILHtLTMacEJYaMF6zDGAwJG9WZxL69EnWWI3JB1W1SDI8XqspBgVs8VD1J4wJnuj7bZ7grpI5bLsJKBnqPopx_1PU3vL3iFkr0Kdf2vDZd5TiXjbO1EtQYLWM/s1600/ANILLAMIENTO+02-08-2015+007.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqdoeGNY67JmYEfgv7QiILHtLTMacEJYaMF6zDGAwJG9WZxL69EnWWI3JB1W1SDI8XqspBgVs8VD1J4wJnuj7bZ7grpI5bLsJKBnqPopx_1PU3vL3iFkr0Kdf2vDZd5TiXjbO1EtQYLWM/s320/ANILLAMIENTO+02-08-2015+007.jpg" width="192" /></a><br />
It had an advanced plumage after postjuvenile mout.In fact, it was still moulting. This is the back pattern<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPzE2O9vEjJRugr23BwkAi3hvugXyzu4GjfK3bJJFsW7zYNSRFU3VJTJN205-j3YQke8_hu8bi38kG5MT9pQyeexjskcOTdZKhFcj53K_A5OUdTcvEldmH2LeLn2kWvf7ypsjFng16qTo/s1600/ANILLAMIENTO+02-08-2015+005.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="192" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPzE2O9vEjJRugr23BwkAi3hvugXyzu4GjfK3bJJFsW7zYNSRFU3VJTJN205-j3YQke8_hu8bi38kG5MT9pQyeexjskcOTdZKhFcj53K_A5OUdTcvEldmH2LeLn2kWvf7ypsjFng16qTo/s320/ANILLAMIENTO+02-08-2015+005.jpg" width="320" /></a><br />
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Here you have a Google image of the place<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrkwBpif5vIn_HYXztiPyeZ69loIOwuQEj2D_HKVQZEEcJXYwcTREtZOR0AmvaOV8l50Oqb9cDfVmDhoXllqnhPdnqeYi2HAxvzHyr1kNhSSrBZrJ8tE2pzSZDv4eenfCo4YCmuamd9VI/s1600/Zapornia+pusilla+02-08-15.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="177" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrkwBpif5vIn_HYXztiPyeZ69loIOwuQEj2D_HKVQZEEcJXYwcTREtZOR0AmvaOV8l50Oqb9cDfVmDhoXllqnhPdnqeYi2HAxvzHyr1kNhSSrBZrJ8tE2pzSZDv4eenfCo4YCmuamd9VI/s320/Zapornia+pusilla+02-08-15.jpg" width="320" /></a></div>
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This was the inly crake trapped that day. I´ll be trying in some weeks.</div>
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Regards to my colegue Nina Seifert.</div>
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Kind Regards.</div>
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J. David</div>
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Se muestran 2 fotos de a polluela chica que anillé el pasado 2 de agosto en el Brazo del Este, Sevilla (Marismas del Guadalquivir). Tenéis una imagen de Google del lugar. Se trata de un ejemplar juvenil con plumaje avanzado, con muda postjuvenil aún en curso. </div>
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Saudos.</div>
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<br />J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-89496923791083720062015-09-13T16:30:00.004-07:002015-09-13T16:34:37.163-07:00<b>NEW SCIENTIFIC NAME FOR BAILLON´S CRAKE</b><br />
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<i><b> Porzana pusilla</b></i> is now <i><b>Zaponia pusilla</b> </i>if we follow the recommendation in<br />
<b><br /></b><span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. </span><em style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">HBW and BirdLife International Illustrated Checklist of the Birds of the World</em><span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">. Lynx Edicions BirdLife International.</span><br />
<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;"><br /></span>
<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">Although you can find <i>Porzana pusilla</i> in many pages in the internet, specially those before 2014, a lot of others have chage to <i>Zapornia</i>. So, I´l use this name from now.</span><br />
<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;"><br /></span>
<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">I´m not taxonomist, so I can´t say wich one is more correct. I think the authors above must have good reasons.</span><br />
<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;"><br /></span>
<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">Anyway, I´ll keep <i>Porzana</i> in the old articles in order to help anyone searching for crakes in the internet.</span><br />
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<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">Regards</span><br />
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<span style="background-color: white; color: #2a424e; font-family: verdana, arial, sans-serif; font-size: 12.6667px;">J. David</span>J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-25249520695327681972014-12-31T17:02:00.002-08:002014-12-31T17:02:44.635-08:00Long time after the last publication in this blog. Many problems....but I´m still here. Thank you to be still there. Mis disculpas a los que no leen en inglés. Prometo escribir en español en cuanto pueda.<br />
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Rice fields have became one of the most important habitat for rallids in Spain and, probably, in hole Europe.<br />
All rallids of "walking morphology", those adapted to walk on floating plants, mud or shallow water, find in rice paddies cover and sources of food.<br />
In the marshes of Guadalquivir (SW Spain), including Doñana area, I´ve found 4 species breeding in rice fields and one more on passade. The breeders are Purple gallinule (Porphyrio porphyrio), Moorhen (Gallinula chloropus), Water rail (Rallus aquaticus) and Baillon´s crake (Porzana pusilla). On passage, Spotted crake (Porzana porzana) is found every year.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfFFFYgL34dBHsfUEHk2Ya-0MEiWp6oOTJMMUTAvzANNtk12YqWlIKxKGoteWllYuh_tu47YPD2oLomE3eAJEkamrVuJkGrKSfJe2PHCQ2BOzLwfkGFk_LQWKZLaBETAAEGYsHOluEyms/s1600/MACHO+CON+POLLOS.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfFFFYgL34dBHsfUEHk2Ya-0MEiWp6oOTJMMUTAvzANNtk12YqWlIKxKGoteWllYuh_tu47YPD2oLomE3eAJEkamrVuJkGrKSfJe2PHCQ2BOzLwfkGFk_LQWKZLaBETAAEGYsHOluEyms/s1600/MACHO+CON+POLLOS.jpg" height="213" width="320" /></a></div>
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<i>adult Baillon´s crake with chicks in a rice field in Sevilla, SW Spain (photo Miguel Ángel Rojas)</i></div>
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Probably all other rallids recorded in Iberian Peninsula can be found in rice paddies at any moment of the year. However, the intensification of the technics of growing rice and the use of several chemical products could play an important role in the use of this habitat and breeding success for these and all the other species (herons, egrets, greebs, passerines).</div>
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Nevertheless, the huge size of the area of rice cultivation in Spain (and so in Italy and many other countries) offer many possibilities. Only in Sevilla area, some 36000 ha are occupied. But the densities can be very low and fluctiating. This is what I´m investigating at the momeny. I´d like to use this space to share with you every new I could find. I hpoe you will be there....... Regards</div>
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J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-70412253504639968012011-07-08T12:29:00.000-07:002011-07-08T12:29:51.417-07:00EL CERNÍCALO VULGAR (Falco tinnunculus) DEPREDA SOBRE LA POLLUELA CHICA. KESTREL FEEDS ON BAILLON´S CRAKEEn Doñana existe algún Cernícalo vulgar (<em>Falco tinnunculus</em>) que vive en la marisma gracias a viejas construcciones y que se ha especializado en la caza de aves, siendo la Polluela chica (Porzana pusilla) una de sus principales presas. Hemos encontrado restos en dormideros de cernícalo que pueden verse en la foto.<br />
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There´s any Kestrel (Falco tinunculus) living at Doñana marshes thanks to old buildings specilized in hunting small birds. Baillon´s crake (<em>Porzana pusilla</em>) is one of the main preys. You can see in the picture some of the remains found.<br />
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En esta imagen pueden verse los restos dejados por el cernícalo, donde se aprecian numerosas plumas de polluela chica y de lavandera boyera (<em>Motacilla flava</em>). Fotos de Martin Schuck.<br />
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You can see in this picture many feathers left by the kestrel of Baillón´s crake and of <em>Motacilla flava. </em>Pictures from Martin Schuck.<br />
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Since April, a spanish-german team tries to shed light about Baillon´s crake in the marsh of Doñana national park. Despite many difficulties, we have got some interesting results. I show some examples. The pictures and voice records are from my colegue Marting Schuck, becoming a specialist in the species.<br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXKQAO9udYFfi66UIZtdkeQyd8YmvF1LdMEMRGMfN3YkSuiHs7S51DHsBqjN7tzbRI-XoHnv-WGh3amB2mOOzh4lwBFnJqk6-6mlamccUXSp8rMuZw78QZ-w3tJiVO4DmKAclAsK1Fb-s/s1600/_MG_4799.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213px" i$="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXKQAO9udYFfi66UIZtdkeQyd8YmvF1LdMEMRGMfN3YkSuiHs7S51DHsBqjN7tzbRI-XoHnv-WGh3amB2mOOzh4lwBFnJqk6-6mlamccUXSp8rMuZw78QZ-w3tJiVO4DmKAclAsK1Fb-s/s320/_MG_4799.jpg" width="320px" /></a></div><br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX9PT1yye3O0Xs3mZpJcce9NmyK4UySXL4S7mgdEuCxekaLqXdMCRLOihGndnOlkNwic4sna1pWZqu9xSIcElU6f2UBOeDMxLQ1D975mkKpf8fpWQUfc6S6utPLxpIyKOQu5nSlJY6_iY/s1600/_MG_4864.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213px" i$="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX9PT1yye3O0Xs3mZpJcce9NmyK4UySXL4S7mgdEuCxekaLqXdMCRLOihGndnOlkNwic4sna1pWZqu9xSIcElU6f2UBOeDMxLQ1D975mkKpf8fpWQUfc6S6utPLxpIyKOQu5nSlJY6_iY/s320/_MG_4864.jpg" width="320px" /></a></div> algunas de las polluelas chicas (<em>Porzana pusilla</em>) adultas anilladas several adult Baillon´s crakes (<em>Porzana pusilla</em>) ringed<br />
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Lejos de poder hacer estimas poblacionales totales, sí podemos constatar que hay poblaciones relativamente densas en el interior de la marisma, así como zonas en las que parece no existir la especie. Al tiempo de escribir estas líneas, hay algunos machos cantando, lo que nos hace sospechar que estamos ante la segunda puesta de algunas parejas. No obstante, los niveles de agua puede que no sean suficientes para que tengan éxito.<br />
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Although we can´t make stimations of total population, we can ensure there´re some relatively dense populations and zones with aparenttely no crakes at all. At the current time of these lines, several singing males make us to suspect there must be a second clutch for those pairs. However, the water levels could not be enough for theses clutches to success.<br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUK3psSVAlV1gAxFb06TaORGKMiOqazc1pndHOHIPMIvpcDQHT_LcqiNbvAybpCMuB-HpypqK3jUtc8pvwCbdEsIY1tMsxaqTqwfnx8M__kpWNH9Y59DoV_9La5N3at-XbtykQA5YZk34/s1600/primavera+2011+815.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240px" i$="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUK3psSVAlV1gAxFb06TaORGKMiOqazc1pndHOHIPMIvpcDQHT_LcqiNbvAybpCMuB-HpypqK3jUtc8pvwCbdEsIY1tMsxaqTqwfnx8M__kpWNH9Y59DoV_9La5N3at-XbtykQA5YZk34/s320/primavera+2011+815.jpg" width="320px" /></a></div><br />
También hallamos "falsos nidos" (nidos que no se llegan a terminar ni utilizar), como el de la imagen.<br />
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We found "false nests" (nests that are not finished neither used), like this one in the picture.<br />
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Más en breve.......<br />
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</div>J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-36719987951955478142011-04-21T13:42:00.000-07:002011-04-21T13:59:10.741-07:00LA DISPERSIÓN DE JÓVENES DE POLLUELA CHICA EN EL BRAZO DEL ESTE / DISPERSION OF YOUNG BAILLON´S CRAKES IN BRAZO DEL ESTE (SEVILLA, SPAIN)<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLuT0lKO_jSfMB5rpb2S0RzRXPK1dnbziBl9RFPBYc5X9pWyb8_YrQ5FpKisc-kPDuP90aE0Fs7LGNpgwNzqZWN9T0ijVOeMwYscRFpbQWxJtAW29fwuXm0GzgSp4FQIXP7f8QS14oEUs/s1600/IMG_6229.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240px" i8="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLuT0lKO_jSfMB5rpb2S0RzRXPK1dnbziBl9RFPBYc5X9pWyb8_YrQ5FpKisc-kPDuP90aE0Fs7LGNpgwNzqZWN9T0ijVOeMwYscRFpbQWxJtAW29fwuXm0GzgSp4FQIXP7f8QS14oEUs/s320/IMG_6229.jpg" width="320px" /></a></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAFB44mqPpAX7WEQZtN10GaXakho2JgvMA9OUcfsdeWH4BjHCYnMZL4eY5oOmG_0XhA6BSHH0hacRHgbSZeMwgA8WySIiICe9a1VRBwip5FKHNWOk_CeUp7FksmPi1sCGqopgyCk0bHg4/s1600/IMG_6213.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="240px" i8="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAFB44mqPpAX7WEQZtN10GaXakho2JgvMA9OUcfsdeWH4BjHCYnMZL4eY5oOmG_0XhA6BSHH0hacRHgbSZeMwgA8WySIiICe9a1VRBwip5FKHNWOk_CeUp7FksmPi1sCGqopgyCk0bHg4/s320/IMG_6213.jpg" width="320px" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">estas fotos corresponden a distintas polluelas chicas jóvenes del año observadas en el Brazo del Este en Junio de 2009</td></tr>
</tbody></table><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhinuPbVJ9ytvoU3I-yzYFiI2Wjt_fCQO93ycdq1QbA4NhQAVt3wy19Jd-_NP0s-2KzmVItr7KyKkMiQWiLhulpZZC3bV6Dr27xv5RR0_-KU5nSB8gBliPnOID5cg2SLaYbyR-vK9lrSxQ/s1600/IMG_6207.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240px" i8="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhinuPbVJ9ytvoU3I-yzYFiI2Wjt_fCQO93ycdq1QbA4NhQAVt3wy19Jd-_NP0s-2KzmVItr7KyKkMiQWiLhulpZZC3bV6Dr27xv5RR0_-KU5nSB8gBliPnOID5cg2SLaYbyR-vK9lrSxQ/s320/IMG_6207.jpg" width="320px" /></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIhse7VRLmNHE1QKCvRA3CIvP57_FzJbaRM77JPLiGmPTSGL9q62z4Xo7o5oIJr-kmacpW8dgULgX3x0lnOtzZ7qm6v4HKItWBR9UPlCKuHU8wIwwBojId4L6qXhfCbtFXBOSwnBgaQXY/s1600/IMG_6204.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240px" i8="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIhse7VRLmNHE1QKCvRA3CIvP57_FzJbaRM77JPLiGmPTSGL9q62z4Xo7o5oIJr-kmacpW8dgULgX3x0lnOtzZ7qm6v4HKItWBR9UPlCKuHU8wIwwBojId4L6qXhfCbtFXBOSwnBgaQXY/s320/IMG_6204.jpg" width="320px" /></a></div>J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-32042432451131704232011-03-25T06:07:00.000-07:002011-03-25T06:07:55.438-07:00joven polluela chica en el Brazo del Este (Sevilla) / young Baillon´s crake in Brazo del Este (Seville, Spain)<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDInGFRHCRJx-SoHtcrKWLxF_WiqTUBCYv9Mr2zGTp71SZ17qD02ZPV9RhyHjsymYIQBRYh82wzOcl55ANQM-xYW-7jKuctLEXrRgcORnOD_HUNdw6r79Yrc-QxfHj-3hKi7yKOTh19_o/s1600/IMG_6228.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" r6="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDInGFRHCRJx-SoHtcrKWLxF_WiqTUBCYv9Mr2zGTp71SZ17qD02ZPV9RhyHjsymYIQBRYh82wzOcl55ANQM-xYW-7jKuctLEXrRgcORnOD_HUNdw6r79Yrc-QxfHj-3hKi7yKOTh19_o/s320/IMG_6228.jpg" width="320" /></a></div>J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com2tag:blogger.com,1999:blog-9052713590493419800.post-50498562353562281712011-03-10T11:09:00.000-08:002011-03-10T11:09:01.675-08:00Los arrozales como hábitat alternativo<div class="post-header"><div class="post-header-line-1"></div></div><div class="post-body entry-content">Los arrozales se perfilan como un hábitat colonizado, especialmente, por aves de esta familia. Aunque son numerosas las informaciones sobre aves y arrozales, especialmente en Sudamérica, y la consideración de numerosas especies asociadas a estos medios, la mayoría de los datos se refiere a aves que utilizan las parcelas de arrozal cuando no está el cultivo activo, o bien, aves propias de las márgenes de los mismos, que aprovechan los recursos que ofrece el agua del cultivo.<br />
Son los rálidos las aves que presentan, en general, una mejor adaptación al arrozal en su totalidad, dada su facilidad para desplazarse por el interior de medios con vegetación herbácea densa.<br />
En las marismas del Guadalquivir he podido constatar la presencia regular de <em>Porzana pusilla</em>, <em>Porzana</em> <em>porzana</em>, <em>Rallus aquaticus</em>, <em>Gallinula chloropus</em>, <em>Porphyrio porphyrio</em> y <em>Fulica atra</em>, al menos, en el interior de las parcelas, aunque esta última está condicionada a la presencia de claros de gran tamaño en el cultivo. <br />
El estudio del uso de los arrozales por parte de estas especies en las marismas del Guadalquivir se remonta a 2006. Próximamente espero poder ofrecer referencias publicadas. De momento, les remito a la revista <em>Quercus</em> de Marzo de 2007. </div>J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0tag:blogger.com,1999:blog-9052713590493419800.post-58403439647706991342011-03-10T11:07:00.000-08:002011-03-10T11:07:03.936-08:00Empieza la temporada de migración de polluelas / The migration season of crakes is just starting<div class="post-header"><div class="post-header-line-1"></div></div><div class="post-body entry-content">La temporada de 2011 no se ha hecho esperar. Un polluela bastarda (<em>Porzana parva</em>) está siendo observada desde hace una semana en un humedal de Los Palacios, Sevilla, llamado Cerro de las Cigüeñas. No es habitual que las primeras observaciones de polluelas en estas latitudes se produzcan antes de mediados de Marzo, aunque haya observaciones repartidas a lo largo de todos los meses si observamos las bases de datos.<br />
No sé si esto nos indica que vaya a ser una temporada pródiga en observaciones. Quiero pensar que la cosa promete. Lo comprobaremos en los próximos dos meses, cuando podamos considerar concluida la temporada de migración. Les recuerdo que cualquier humedal, especialmente en el mes de Abril, podría proporcionar una o más observaciones de polluelas. Recominedo observar allí donde haya cobertura no muy densa, con claros y con hojas o tallos flotando, sobre los que las polluelas (<em>Porzana sp</em>) suelen caminar, o bien, allí donde haya poca profundidad y zonas de barro junto a la cobertura, lo que, en mi experiencia, es propicio para observar a la polluela pintoja (<em>Porzana porzana</em>).<br />
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The current migration season, 2011, is not late. One Little crake (<em>Porzana parva</em>) has been observed since the the last week, in a wetland close to the village of Los Palacios, Seville, SW Spain, called "Cerro de las Cigüeñas". It´s not frecuent to find the first sightings of crakes (<em>Porzana sp</em>) before midMarch. Though, there are records all the year long if you check any database.<br />
I don´t know if this is means we are going to have a good season to see crakes. I wish to think it looks promising. We´ll see the next two months, when we´ll be able to consider the migration finished. I want to remind that any wetland could get a sighting of crakes during April, specially. I recommend to check the places with not very dense cover and floatings plants, leaves or stems where the crakes are able to walk. Or muddy patches close to the cover, good, in my experience, for Spotted crake (<em>Porzana porzana</em>). Good luck¡<br />
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J. David Muñoz </div>J. David Muñozhttp://www.blogger.com/profile/09305402410069743978noreply@blogger.com0