Rare
Birds in Spain
Photos
 Breeding
Orange-billed terns in Catalonia, July 2003.
Photos
by David Bigas i Campàs
Introduction
The
Ebre Delta (Delta del Ebro in Spanish, Delta de l'Ebre in Catalan) is the
only regular place in Spain where Lesser-crested Tern Sterna bengalensis
breeds.
In past times it had bred in l'Albufera de València where, as in
the case of the Ebre delta, depending on years, hybrid pairs with Sandwich
Terns (Sterna bengalensis) were formed.
In 2003
(see recent reports section) three adult Lesser Crested Terns were reported
in Ebre delta since early may (see a photo
here). Of those, one formed a pure pair and another a hybrid pair with
Sandwich Tern.
The
pure pair was seen with one chick all July long (David Bigas) when two
photos, one of an adult and another of an adult plus one chick from the
pure pair were taken on 12.7 (David Bigas). The other hybrid pair S.bengalensis
x
S.sandicensis produced a chick seen on 29.6 to 1.7 and finally ringed
on 2.8, also featured below (David Bigas, Francesc Vidal, Julia Piccardo
et al)
Due
to the interest of this documentation we reproduce below these photos thanks
to David Bigas.
Photographs
All
photos by © David Bigas photographed using digital camera Nikon through
telescope.
Lesser
Crested Terns (Sterna bengalensis) chick (left) and adult (right).
PN Delta de l'Ebre, Tarragona, 12 july 2003 (Photos © David Bigas)
Charranes
bengaleses (Sterna bengalensis) pollo (izquierda) y adulto (derecha).
PN Delta de l'Ebre, Tarragona, 12 julio 2003 (Fotos © David Bigas)
.
Xatracs
bengalis (Sterna bengalensis) poll (esquerra) i adult (dreta). PN Delta
de l'Ebre, Tarragona, 12 juliol 2003 (Fotos © David Bigas)
Lesser
Crested Tern (Sterna bengalensis), adult. PN Delta de l'Ebre, Tarragona,
12 july 2003 (Photo © David Bigas)
Charrán
bengalés (Sterna bengalensis), adulto. PN Delta de l'Ebre, Tarragona,
12 julio 2003 (Foto © David Bigas) .
Xatrac
bengalí (Sterna bengalensis), adult . PN Delta de l'Ebre, Tarragona,
12 juliol 2003 (Foto © David Bigas)
Confirmed
Lesser Crested x Sandwich Tern (Sterna bengalensis x sandvicensis) hybrid
chick . PN Delta de l'Ebre, Tarragona, 2 july 2003 (Photo © David
Bigas)
Pollo
híbrido confirmado de Charrán bengalés y patinegro
(Sterna bengalensisx sandvicensis) . PN Delta de l'Ebre, Tarragona,
2 julio 2003 (Foto © David Bigas) .
Poll
híbrid confirmat de Xatrac bengalí i becllarg (Sterna bengalensis
x sandvicensis) . PN Delta de l'Ebre, Tarragona, 2 juliol 2003 (Foto
© David Bigas)
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Breeding
orange-billed terns in Catalonia, July 2003.
Summary:
Introduction
Photographs
Acknowledgements
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