DESCRIEREA SPECIEI
Călifar alb (lat. Tadorna tadorna) – pasăre înotătoare din familia Anatidae.
Habitează în grupuri pe litoralurile marine și lacurile cu apă sărată din Suedia, Finlanda, insulele Britanice, la fel și din Asia Centrală și de Est.
CARACTERISTICI
Multe rațe care fac parte din această specie migrează sezonier, mutându-se în sezonul rece în țările calde.
Hrana de bază este cea animalieră — icre de pește, pește mici, insecte terestre (lăcuste, greieri, gândaci), râme și unele specii de alge.
O femelă poate fi curtată concomitent de 9 masculi. Totul începe de la cunoaștere. Rațele înoată una spre alta, aplecându-se și luând cu ciocul apa. După finisarea acestui dans masculul își demonstrează frumusețea sa. El înoată în jurul femelei, își întinde gâtul, înclină capul, învârte din coadă și emite un șuierat specific.
Nu degeaba aceste rațe sunt numite „rațe de pământ”. Ele își fac cuiburile în vizuinile iepurilor. Uneori rațele singure își sapă gropi în solul afânat. Cuibul este încălzit cu paie, ramuri, iarbă, puf etc.
În pontă, de obicei sunt
Unindu-se, câteva rațe pot alunga din vizuină vulpea pentru a se stabili cu traiul în vizuina eliberată.
Speranța de viață — până la 15 ani.
Galerie
Alte păsări
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