Bird tracking studies

Index of articles about bird tracking using satellite telemetry and other technologies such as geolocators.

Plain Swift wintering areas revealed by geolocators

Plain Swift / Martinet unicolore (Apus unicolor), El Tablero, Tenerife, Canary Island, 9 July 2013.

A geolocator study revealed that Plain Swifts breeding in the Canary Islands winter in equatorial West Africa. Plain Swift (Apus unicolor) breeds in the Canary Islands and Madeira in the north-east Atlantic. The populations of these two archipelagos are believed to be partly migratory, with an unknown proportion of the breeding population departing the islands …

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Spanish Imperial Eagle dispersion in North Africa in 2017

Spanish Imperial Eagle / Aigle ibérique (Aquila adalberti), near Tanger-Med port, 12 September 2017 (Rachid El Khamlichi).

Dispersion and overwintering of Spanish Imperial Eagles (Aquila adalberti) in Morocco, and northern Africa in general, is becoming regular and in relatively good numbers (for an endangered ‘sedentary’ species). As in previous years, this autumn at least 4 eagles crossed the Strait of Gibraltar to North Africa. We say “at least” because not every bird …

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Tracked Bonelli’s Eagles reached Africa for the first time

Bonelli’s Eagle ‘Zahara’ passing through the Strait of Gibraltar

The recent migration of two young Bonelli’s Eagles across the Strait of Gibraltar to Morocco shows an unknown dispersive movement in this species. This confirms once again the importance of North Africa to the Iberian raptors. The Bonelli’s Eagle (Aquila fasciata) is usually resident across its breeding range. However, some immature birds sometimes make large dispersive …

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Spanish Imperial Eagle recovering space beyond borders

Juvenile Spanish Imperial Eagle (Aquila adalberti) seen at Tarifa, Spain about to cross the Strait of Gibraltar to Morocco

Tracking Spanish Imperial Eagles showed the scale of their movements in Morocco and Africa in general. In 2015, six young satellite-tracked Spanish Imperial Eagles (Aquila adalberti) visited North Africa from Andalusia, southern Spain. A recent article by researchers from the Doñana Biological Station (EBD-CSIC) and the Government of Andalusia explored the subject of these eagles’ …

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Sat-tracked White Stork found dead in fishing lines near Tangier, Morocco

From left to right: Mohamed Amezian, Ahmed El Ketami (who saved the transmitter) & Rachid El Khamlichi

A satellite-tracked White Stork (Ciconia ciconia) found dead near Asilah, Tangier region, northern Morocco. The good news is that the satellite transmitter was found in good condition. This is the story of how the White Stork ‘C666’ died and how its transmitter was found. On 26 November 2013, Brigitta Keeves from the office of Prof. …

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Spanish Short-toed Eagles summering in Northwest Africa

Short-toed Snake Eagle (Circaetus gallicus) by Michele Panuccio

After leaving their Sahelian wintering grounds, immature Spanish Short-toed Snake Eagles spend the summer in northern Africa instead of going back to their natal areas. The importance of the breeding and wintering areas of a bird population for understanding demography and for determining conservation strategies is well recognised. However, the other areas where birds spend …

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