I got the 600pf about 6 weeks ago. Just realized this thread was available to share.
1) Variegated Wren couple.
Z8 + 600pf, 1/400s f/6.3 at 600.0mm iso2800
2) Azure Kingfisher
Z8 + 600pf + 1.4x TC, 1/160s f/9.0 at 840.0mm iso2200
3) Scarlet Robin
Z8 + 600pf + 1.4x TC, 1/250s f/9.0 at 840.0mm iso140
4) Scarlet Robin
Z8 + 600pf + 1.4x TC, 1/320s f/9.0 at 840.0mm iso1100
5) New Holland Honeyeater
Z8 + 600pf, 1/400s f/6.3 at 600.0mm iso1250
6) Double Barred Finch
Z9 + 600pf + 1.4x TC, 1/200s f/9.0 at 840.0mm
7) Double-eyed Fig Parrot couple
Z8 + 600pf, 1/100s f/6.3 at 600.0mm iso4500
8) Mistletoebird
Z8 + 600pf, 1/640s f/6.3 at 600.0mm iso1250