Hedwig in PS/SS & Mrs Lestrange in the Pensieve in OOP

[jotwo2003]

There 2 things I wonder if anyone can help with.

1)  In the Diagon Alley scene in the first film, among the owls,there's 
a white owl in a cage.  Is this Hedwig?

2)  I presume they must be filming the trial of Barty Crouch Jr in the 
Pensieve flashback in GOF.  Is Bellatrix included too, or has she been 
cut from GOF?  I looked on imdb but there was no character called 
Bellatrix Lestrange or even something ambiguous like Woman in the 
Pensieve, for example.

Am I correct in assuming that Bella has not been cast yet and will 
appear in OOP film instead?

Thanks.

JoTwo

Thanks.