Hi,
Bruce wrote:
> 
> <xsl:template match="Species">
>    <xsl:choose>
>      <xsl:when test="Extinct='False' and Genus_Name='Casuarius'">
>        <p>species name is <xsl:value-of select="Species_Name"/></p>
>      </xsl:when>
>      <xsl:otherwise></xsl:otherwise>
>    </xsl:choose>
> </xsl:template>

Why don't you use xsl:if. 

 <xsl:template match="Species">
      <xsl:if test="Extinct='False' and Genus_Name='Casuarius'">
        <p>species name is <xsl:value-of select="Species_Name"/></p>
      </xsl:if>
 </xsl:template>

Regards,
Agnes