Birds

Precocial, Cocial
I learnt that you get basically these two differences in hatch lings with birds the precocial means that they are 'ready to run' as soon as they are born. this is as opposed to the cocial birds who usually are nesting birds and need to be nurtured for a while before they can up an go.
Passerine or perching birds this refers to basic foot structure and non passerine which is ground birds.
Cuckoos
Black eyed bull bull and a Jacobin's Cuckoo. This is a symbiotic relationship between the two the cuckoo being the parasite. The cuckoo's mother lays her egg in the black eyed bull bulls nest because she is too lazy to raise her own chicks. This is definitely something you can tell the guests because they will find it interesting. Other examples of Cuckoos is the Diedricks cuckoo and the Queleas that we had exterminated earlier this year.