Honeyeaters still on the move in large numbers over Duffy - query

["casburnj" <>]

To my amazement – out to measure the rainfall and look for earthquake damage (none) – overhead out of the fog – hundreds of Yellow-faced Honeyeaters, and some larger birds that  I assume to be Red Wattlebirds.  I could not see any differences in smaller honeyeaters crossing as the light was not good, but by their voices, the sounds was varied.

Can someone please give me an idea of how to differentiate the sounds of Yellow-faced from White-naped Honeyeaters please?

Thanks

Jean