All birds Level 50 – even possible?

[Veggie]

I really try to bring all birds up to level 50 but it just take ages after passing Lvl. 40. Especially Mathilde seems to need way more Exp than for example Stella. As there are no Exp boosters anymore it seems quite impossible to me. Any one really brought them all to Level 50?

Topic

[walkerwind]

Many top players has reached Level 50 for all birds already. Just an example:
https://www.facebook.com/photo.php?fbid=324529984602284&set=gm.905588772886505&type=3&theater

Getting all piggies to reach level 50 are much more challenging.