ummmmmmm   .. . nope as usual not got a clue

Can see a raven but have no idea why

Could be short for ravenous.

Raven - bird

hungrily - ravenous

devours - ous 'eaten' from the word ravenous

that's how what I think!

I see sticks too. .but it doesn't fit anyway . . there's a letter missing between the s & t

I really don't get these types of crosswords so have no idea why I am even attempting to try..

Shticks

Raven

I can only think kitchens and Ikea

I think RAVEN is the most likely answer for the first one as has already been suggested.

The next one is ICE. Someone who is icy is reserved. kItChEn. The second, fourth, and sixth (so regular intervals of 2) of kitchen.

Soozy is right, the third one is SHTICKS.

Sticks are supports, H short for hospital, Shticks are show business routines used to get people's attention.

oooooh  I almost got a clue right for the first time ever... except for a missing H...

I think they are all capitals of countries.

I don't have the time to do all of them but:

1ac:

B*I*U*

OSLO

S*O*L (Rawky will know this one )

30ac:

BERN

PARIS

BERLIN

1dn:

B*K*

SOFIA

*A*R*B

8dn:

LIMA

MINSK

*E*R*N

Well spotted El.

The one after OSLO is SEOUL

The one after BERLIN is BAKU.

The one after SOFIA is ZAGREB

I think the last one is TEHRAN

First one could be BEIRUT

Yup, I concur with Yogi.

was just going to post those myself but she beat me too it

 I wouldn't have had a clue if El had mentioned capital cities.

It was the P*R*S one which gave me the idea that it was capital cities.

If the prize are holidays to the 12 cities, I'll take the Paris one

El Loro is our University Challenge representative.

One can but dream

I wouldn't qualify as I never went to university

It's all comin oot noo..

Don't have 'cross words' learn to love each other

The point I wiz makin is El isnae a sandwich short.

He's the smartest dude on here.

I never looked back after Wild Wood.