Not recognising post types or stickies

So I have the following code:

if(is_sticky()){
	echo "I am a sticky";
}elseif(has_post_format('aside')){
	echo "I am an aside";
}else{
	echo "I am just content";
}

which resides in single.php and it it is obvious what it does. How ever going to a sticky or to a aside ONLY ever echos out “I am just content” when it shouldn’t.

thoughts?