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Il controllo della quelea dal becco rosso
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ISBN10: 6209047777
ISBN13: 9786209047770
Publisher: Edizioni Sapienza
Published: Sep 22 2025
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786209047770
Publisher: Edizioni Sapienza
Published: Sep 22 2025
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Italian
I quelea sono uccelli altamente gregari, che si riuniscono ovunque sia possibile, in base alla disponibilità e alla distribuzione del cibo. Sono strettamente imparentati con altre specie della famiglia dei Tessitori, ma sono unici nel loro modello comportamentale: si spostano a distanze considerevoli ogni anno durante la stagione riproduttiva per sfruttare la tempistica stagionale del passaggio dei fronti di pioggia (uno schema insolito per le specie di uccelli più piccole che si nutrono di semi). In tutta l'Africa subsahariana, i quelea si spostano stagionalmente su grandi distanze, fino a 1100 km registrati per un solo spostamento. L'escalation del loro numero in proporzioni simili a quelle delle locuste mette in evidenza l'aspetto negativo delle attività di macroagricoltura che minimizzano efficacemente i vincoli naturali sul numero delle popolazioni all'inizio della stagione delle piogge, quando il cibo naturale diventa criticamente scarso.
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