| Titre : | Journal of Ornithology 143(3) - JUL 2002 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
H. R. Guttinger, Auteur ;
T. Turner, Auteur ;
S. Dobmeyer, Auteur ;
J. Nicolai, Auteur
The analysis of the songs of bullfinches that as juveniles had learned a human melody or song parts of a canary give insights into the perceptive faculties and into the learned coordination between the muscles of the vocal organ, the syrinx - re[...]
Article
B. Stephan, Auteur
This paper is a critical evaluation of the theories purporting to explain the different number of primaries, which Stegmann (1962) first associated with the evolutionary change of wing form. The change in the number of primaries in the metacarpa[...]
Article
P. Christiansen, Auteur ;
N. Bonde, Auteur
Phylogenetic systematics unanimously concludes that birds (Archaeopleryx + crownclade Aves) are a subgroup of the theropod dinosaurs. The discovery of non-avian theropods from China with large pennaceous feathers offers additional support to thi[...]
Article
H. M. Schaefer, Auteur ;
V. Schmidt, Auteur
We compared the feeding behaviour of two groups of captive Blackcaps (Sylvia atricapilla) on a mixed diet consisting of an insect diet and ripe or unripe fruits. Unripe Black Elder (Sambucus nigra) fruits have lower nutritional values, especiall[...]
Article
S. Jenni-eiermann, Auteur ;
L. Jenni, Auteur ;
T. Piersma, Auteur
Seasonal variation in plasma concentrations of the two thyroid hormones
Article
J. W. H. Ferguson, Auteur ;
A. van Zyl, Auteur ;
K. Delport, Auteur
Four hypotheses were tested for explaining interspecific mimicry observed in African Cossypha robin-chats. (1) The five robin species imitate similar models. (2) Natal Robin imitations reflect the acoustic environment within their habitat. (3) N[...]
Article
P. Buhler, Auteur ;
W. J. Bock, Auteur
The generally accepted name Archaeopteryx lithographica von Meyer, 1861, for the ancient feathered birds from the Solnhofen limestones has been the subject of a number of nomenclatural analyses, terminating in two decisions by the International [...]
Article
C. Acquarone, Auteur ;
M. Cucco, Auteur ;
G. Malacarne, Auteur
Little is known about indices of health condition in free-living populations and particularly about the presence of significant fluctuations of these indices between years. We assessed blood and immunological condition in wild Hooded Crows (Corm[...]
