martes, 9 de julio de 2019

1st summer Northern Gannet pitfall for Brown Booby

On 6.7.2019 a brown and white gannet was seen off Arnao, Asturias (Saúl Rodríguez).  See two photos below. The bird was initially identified as a Brown Booby (Sula leucogaster) mostly on the basis of the face pattern and overall black and brown plumage.

© Saúl Rodríguez, 6.7.2019

© Saúl Rodríguez, 6.7.2019

On 9.7 Daniel López Velasco, after being contacted by Jorge Valella who initially realised the bird was not a Brown Booby, confirmed that the photos of the bird and initial thoughts of Jorge were right so the bird was indeed a 1st summer Northern Gannet (Morus bassanus).

Features pointing towards Morus were:

• Brown chest limit too far from the front edge of the wing compared with Sula leucogaster (see figure below)

• White rump (hardly visible in the photos)
• Dark underwings


Sula leucogaster  © Daniel López Velasco


Arnao photos were not taken close enough and face pattern strongly recalled that of Sula leucogaster but a better analysis of the bird shows worn feathers and a face pattern that could be caused by moulted feathers into white, therefore matching at distance the leucogaster pattern. The rather ‘milk chocolate’ colour is paler than that expected for a leucogaster, richer and darker.

This bird really stands out the difficulties of accepting a distant Brown Booby sighting in this part of the year if it is not properly seen and even photographed.

Thanks to Jorge Valella and Dani López por pointing out this interesting pitfall.

martes, 15 de enero de 2019

Gavia pacifica, rarest of the rare birds in Spain 2018

Photo: © Ricardo Rodríguez 12.1.2018


A raiz de cambios en blogger, este año se ha establecido un nuevo sistema de votación para la 9ª edición del concurso el más raro de los raros. Se ha podido votar via facebook y twitter a los 15 candidatos presentados.

Después de unos dies de votación y 181 votos contabilizados, el nuevo ‘más raro de los raros’ 2018 es el colimbo del Pacífico Gavia pacifica, segundo para España, encontrado en Caspe, Zaragoza por Esther Yera en enero y bimbado por mucha gente venida de cerca y lejos. El colimbo ha obtenido un total de 49 votos (4 en twitter y 45 en facebook), el 27,07% de los emitidos.

Con 31 votos y el 17,13% de los votos, ha quedado el segundo clasificado, el zorzal rojigris Turdus obscurus que fue visto en Cádiz en febrero y marzo.

En tercer lugar ha quedado una primera cita para el país como es la subespècie oriental de lavandera boyera Motacilla flava tschutschensis vista y oida en el Delta del Llobregat, Barcelona en noviembre de 2018 (22 votos, 12,15%).

Un año más, felicidades a todo el mundo y gracias por participar en este concurso único y original de rarebirdspain que sirve un poco para rememorar las efemèrides rarornitológicas más relevantes del año que nos ha dejado. Gracias por votar via facebook (grupo rarebirdspain) y twitter (@rarebirdspain).

 Hasta final de año con el más raro de los raros 2019!

 ***

Due to unexpected changes in blogger policy, this year the rarest of the rare contest has established a new voting mechanism. Voting has been possible through twitter (@rarebirdspain) and facebook (rarebirdspain group) and 181 votes have been collected sharing both social media results. 

Pacific Diver Gavia pacifica, found inland in January by Esther Yera in Caspe, Zaragoza, and widely twitched, is the rarest of the rare birds in Spain 2018. It has obtained 49 supports (4 in twitter and 45 in facebook), and a 27% of the total amount of votes. 

Second classified has been the Eye-browed Thrush Turdus obscurus from Cádiz in February-March (31 votes, 17,13%). Third place has been for a 1st for the country, an oriental race of Yellow Wagtail, Motacilla flava tschutschensis seen and heard at Llobregat delta, Barcelona in November (22 votes, 12,15%). 

Once more, congrats everybody and see you next end of the year with the original and unique rarebirdspain's Rarest of the Rare contest!


Photo: © Ricardo Rodríguez 12.1.2018