Reaper still makes an incredible giant bird, 03092 Axebeak for $6.99 each but I thought that was a bit too much for my budget, so I kept searching. I went to Historicon back in 2014 and the gentleman from Iron Wind Metals was selling Ral Partha by the pound. I found all manner of interesting bits, but my favorite find were in a miscelanous creatures box. The giant birds that I later found on their website as DF 594 Phorhusracos for $5.50, were on sale for a by the pound convention price which was much less. He even helped me find the twelve I wanted complete with wings. So my Hinterland Princess Viktoria's Lancers will be patrolling on giant war birds from Ral Partha.
ShadowSea has a stunning Skullcracker bird for $22.99 but that is way too expensive for a unit of 12.
Copplestone Castings had a pair, but thet aren't on the website any more.