BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="spanishalex" data-source="post: 146084" data-attributes="member: 2029">My guess is that the senegalensis resident on Fuerteventura are descended from introduced birds. David Bannerman in his Birds of the Atlantic Islands Volume II lists the species as a bird that had been recorded from the islands but of which confirmation was still needed. That was in 1963 in the days when the policy was still shoot first, identify later. A natural colonistaion is possible given that the island of Fuerteventura has changed so much in the past few years and new habitats have appeared. The serin and greenfinch have colonised the islands within the past 50 years. Even the spanish sparrow is a relative newcomer.As for the risoria/decaocto debate your suggestion is a good one. Decaocto has definitely spread ràpidly since it appeared in the 1980s and you would expect it to outcompete risoria, a feral domesticated bird, almost everywhere. Risoria may well survive only in places where the birds are fed regularly by us; parks and the like.</blockquote>