cd_nom
Author : R. Clerc |
To get the picture, please visit:
Roland Clerc
Photographe naturaliste
http://www.faune-valais.ch/index.php?page=accueil
email : inpn@mnhn.fr
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Author : R. Clerc |
To get the picture, please visit:
Roland Clerc
Photographe naturaliste
http://www.faune-valais.ch/index.php?page=accueil
email : inpn@mnhn.fr
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Author : R. Clerc |
To get the picture, please visit:
Roland Clerc
Photographe naturaliste
http://www.faune-valais.ch/index.php?page=accueil
email : inpn@mnhn.fr
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Author : R. Clerc |
To get the picture, please visit:
Roland Clerc
Photographe naturaliste
http://www.faune-valais.ch/index.php?page=accueil
email : inpn@mnhn.fr
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Author : R. Clerc |
To get the picture, please visit:
Roland Clerc
Photographe naturaliste
http://www.faune-valais.ch/index.php?page=accueil
email : inpn@mnhn.fr
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Author : S. Wroza |
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Author : S. Wroza |
Despite the Creative Commons license, please inform the author of the use which will be made of his photo
Taille/poids :
Longueur totale : 29 à 36 cm. Poids : 150 à 200 g.
Diagnose :
Oiseau de la taille du Geai des chênes (Garrulus glandarius) au plumage marron plus ou moins vif, parsemé de mouchetures blanches sur le cou, les joues, le dos et la poitrine. Le bec massif et puissant, ardoise sombre ou noirâtre, est de forme conique effilée. Les pattes relativement courtes sont noirâtres. Les rémiges et les rectrices sont noires à reflets verdâtres, ces dernières terminées par une bordure blanche de plus en plus large des médianes aux externes. En dessous, elles procurent, avec les sous-caudales blanc pur, un bon caractère d’identification en vol.
Détermination :
Période d’observation :
Toute l’année.
Biologie-éthologie :
Le Casse-noix est une espèce à régime alimentaire spécialisé, constitué de grosses graines oléagineuses (surtout celles de pins, localement de noisetiers), à enveloppe épaisse, qui sont récoltées durant l’automne. Conservées dans des caches, elles assurent l’apport énergétique indispensable à sa survie dans un habitat aux hivers rigoureux. Les jeunes sont nourris de graines de Pin cembro ou de noisettes puisées dans ces réserves, mais aussi de proies animales, araignées, coléoptères, micro mammifères.
Biogéographie et écologie :
L’espèce est distribuée dans diverses forêts de conifères ou mixtes des zones boréales ou de montagne du Paléarctique. En France, le Casse-noix est absent des forêts pures de feuillus et n’établit ses territoires qu’à l’étage de la forêt de conifères.
Compilé par J. Comolet-Tirman à partir des Cahiers d’habitats.(UMS 2006 Patrimoine Naturel (AFB / CNRS / MNHN)),2017
Continental
Metropolitan France
Overseas
Marine
Metropolitan France
Overseas
The map presents a summary at the 10 x 10 km grid of the observation data for the species transmitted to the SINP. These data have been subjected to validation filters.
The map presents a reference distribution layer of the species at the scale of departments and marine sectors. The presence and absence data were established by expertise within a network of partners. This reference distribution is used in the validation process of the SINP data at the INPN level.
Corresponds to a report on the basis of at least one observation proved within a period of 10 years (20 years for little-known invertebrates) preceding the year and no presumption of extinction since obtaining the last data nor doubt on reproductive and implemented nature of this population. For migratory species, the presence indicated concerns areas of reproduction.
This status is based on one or more of the following criteria:
This point covers the absence, more difficult by nature to demonstrate than presence. This status is based on one or more of the following criteria:
This status must be assigned to a department in which the presence of the species is casual.
Particular case of absence due to a proven extinction less than a half century ago (older disappearances are treated as "no probable or definite").
In the state of knowledge, we can not comment on the presence or absence in the current department. This is the default status when not comprised in one of the previous categories or whenever there is doubt.
The map shows the global distribution of the species based on GBIF data (Global Biodiversity Information Facility).