I have spent a few days sweating Byg Byrds, just so that I can get killed by them and gather stats on the damage. My conclusion is that they have a maximum damage of 290.
This is from the stats I've collected which ranges from 145.2 to 289.4. As with all Entropia Universe creatures, the damage range is from half-maximum to maximum, taken as whole numbers - so round-down 145.2 to 145, which means maximum possible is 290, and round-up the 289.4 to the next whole number which is 290 - a match, proving that 290 is indeed the maximum damage that a Byg Byrd can inflict.
This is from the stats I've collected which ranges from 145.2 to 289.4. As with all Entropia Universe creatures, the damage range is from half-maximum to maximum, taken as whole numbers - so round-down 145.2 to 145, which means maximum possible is 290, and round-up the 289.4 to the next whole number which is 290 - a match, proving that 290 is indeed the maximum damage that a Byg Byrd can inflict.