# Package biblatex Warning: No driver for entry type 'url'

I have a bibliography in BibDesk, and use biblatex with biber backend. However, biblatex complains Package biblatex Warning: No driver for entry type 'url'. and apparently falls back Using fallback driver on input line 126.

Here is a MWE:

\documentclass{scrartcl}
\usepackage[english]{babel}
\usepackage{csquotes} % rec'd by babel

\usepackage{biblatex}

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@Url{nytnigeria2011,
Author = {{New York Times}},
Title = {Nigerians Vote in Presidential Election},
Url = {http://www.nytimes.com/2011/04/17/world/africa/17nigeria.html},
Urldate = {2012-03-25},
Year = {2011}
}
\end{filecontents}

\begin{document}

\section{Introduction}
Dummytext~\cite{nytnigeria2011}.
\newpage
\printbibliography
\end{document}

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Use @online instead of @Url or @article –  egreg Mar 25 '12 at 16:29
@egreg Make that an answer, please. –  lockstep Mar 25 '12 at 17:09
I deleted my previous comment, I had another paper that didn't use biber as biblatex backend, which could be a reason that it worked, or I just never really paid any attention to the errors (I finished that at 5 in the morning). –  Zsub Mar 25 '12 at 18:25

There is no @url entry type known to biblatex, but there's a @online one; you can choose also @article, if you know the precise data. This should work

@online{nytnigeria2011,
Author = {{New York Times}},
Title = {Nigerians Vote in Presidential Election},
Url = {http://www.nytimes.com/2011/04/17/world/africa/17nigeria.html},
Urldate = {2012-03-25},
Year = {2011}
}

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Aparently, BibDesk as of version 1.5.7 doesn't know about an @online field, however, it does have an @electronic, which according to the biblatex docs is a synonym for @online. Thanks and accepted :) –  Zsub Mar 25 '12 at 18:23
@Zsub I believe that BibDesk can be instructed to extend the accepted types. –  egreg Mar 25 '12 at 20:45