scholarly journals Summer observations of Eleonora’s Falcon (Falco eleonorae) in the Stura Valley (South Western Alps)

2021 ◽  
Vol 91 (1) ◽  
pp. 55-56
Author(s):  
Nicolò Grasso ◽  
Fabiano Sartirana

From 1999 to 2020 the Eleonora’s Falcon (Falco eleonorae) has been observed 12 times at the site of Madonna del Pino, near Demonte (Province of Cuneo - Piedmont - South Western Alps). All of these individuals were birds in their second calendar year and thus these sightings are to be attributed to summer movements of nonbreeding animals. The growing number of observations of this species is imputable to the increasing identification skills of birdwatchers, necessary in order to distinguish Eleonora’s Falcons from the similar and very common Eurasian Hobby (Falco subbuteo), and to the constant monitoring of migrating raptors as part of the Migrans Project.

2016 ◽  
Vol 106 (1-2) ◽  
pp. 200-201 ◽  
Author(s):  
Ronny Steen ◽  
Cathrine S. Torjussen ◽  
Dean W. Jones ◽  
Thodoris Tsimpidis ◽  
Anastasia Miliou

Biologia ◽  
2021 ◽  
Author(s):  
Hsan Ben Jemaa ◽  
Aymen Nefla ◽  
Zakher Bouragaoui ◽  
Said Nouira

The Auk ◽  
2002 ◽  
Vol 119 (3) ◽  
pp. 835-840 ◽  
Author(s):  
Mikael Rosén ◽  
Anders Hedenström

Abstract Eleonora's Falcon (Falco eleonorae) breeds in the Mediterranean region and is highly adapted for catching small birds on passage migration between Eurasia and their African winter quarters, which they feed their young. We studied gliding flight behavior of Eleonora's Falcon at a breeding colony located on a small island southwest of Sardinia, Italy. Gliding and soaring flight performance was measured using an optical range finder and evaluated against flight mechanical theory. The male falcon does the majority of hunting and usually sets off from the colony to hunting areas located at high altitude over the open sea to catch prey. To lower the cost of transport and maximize the energy gain from hunting, we show that the birds use vertical winds for soaring when available. The occurrence of rising air changes with wind direction. At north-northwesterly winds (on-shore), slope lift is available outside the nesting cliffs, and at south-southeasterly winds thermals that form over the island drift out over the sea. Our observations demonstrated the flexibility of flight behavior in relation to the wind situation, and birds thereby make full use of available soaring conditions.


2007 ◽  
Vol 149 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Anastasios Dimalexis ◽  
Stavros Xirouchakis ◽  
Danae Portolou ◽  
Panagiotis Latsoudis ◽  
Giorgos Karris ◽  
...  

1986 ◽  
Vol 1 (1) ◽  
pp. 60-69
Author(s):  
Max Kasparek ◽  
Dietrich Ristow

2013 ◽  
Vol 23 (4) ◽  
pp. 487-494 ◽  
Author(s):  
UGO MELLONE ◽  
PASCUAL LÓPEZ-LÓPEZ ◽  
RUBÉN LIMIÑANA ◽  
VICENTE URIOS

SummaryRecent advances in bird tracking technologies are revealing that migratory birds use temporal staging sites other than breeding and wintering areas, and these areas deserve conservation efforts. Eleonora’s Falcon Falco eleonorae is a long-distance migratory raptor that breeds colonially on islands and is considered a priority species for conservation. Anecdotal observations indicate that during the pre-breeding period, Eleonora’s Falcons stay in inland areas far away from the colonies, but, to date there are no detailed data concerning the connectivity between these areas and breeding colonies. Using satellite telemetry, we analysed data from four summering events belonging to three individuals breeding in two colonies in the Western Mediterranean (Spain). All of them made inland movements in areas up to c.400 km distant from the respective breeding colonies, visiting several habitats, from forests to arable lands, probably taking advantage of high densities of insects. Perturbations occurring in these areas could threaten Eleonora’s Falcons with serious consequences at the population level. We suggest that conservation measures implemented at breeding and wintering grounds may not suffice and that temporary staging areas should be identified at a larger scale and deserve protection as well.


2008 ◽  
Vol 275 (1653) ◽  
pp. 2887-2896 ◽  
Author(s):  
Marion Gschweng ◽  
Elisabeth K.V Kalko ◽  
Ulrich Querner ◽  
Wolfgang Fiedler ◽  
Peter Berthold

Eleonora's falcon ( Falco eleonorae ) is a rare raptor species that delays its breeding period until late summer to feed its young with passerines at the peak of autumn migration. Since the 1950s, this slender winged falcon has been believed to migrate along a historical route via the Red Sea to its main wintering area in Madagascar. In our study, we used satellite telemetry to investigate the real migration route of Eleonora's falcons and found that the species displayed a highly individual migration pattern. Furthermore, juvenile falcons migrated via West Africa to Madagascar and two juveniles could be tracked during spring migration and to their summering areas in East and West Africa. As juveniles migrated independently of adults, we discuss inherited navigation strategies forming part of a complex navigation system. We propose the idea of an orientation mechanism that naive falcons could apply during their long-distance migration towards their faraway wintering area located in the open ocean.


Ibis ◽  
2008 ◽  
Vol 122 (1) ◽  
pp. 74-76 ◽  
Author(s):  
Dietrich Ristow ◽  
Bernd Conrad ◽  
Coralie Wink ◽  
Michael Wink

The Auk ◽  
2002 ◽  
Vol 119 (3) ◽  
pp. 835 ◽  
Author(s):  
Mikael Rosén ◽  
Anders Hedenström

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