4 Answers

Birds, unlike humans but like fish, amphibians and reptiles, have four types of ... the ability to perceive not only the visible range but also the ultraviolet part of the ... of colour detectors, but a high density of rod cells which function well in poor light. .... The main structures of the bird eye are similar to those of other vertebrates.

They both have digestive systems which end up with a structure called the cloaca, in which the waste product (uric acid) exits the body.  No need for separate liquid and solids, its a semi-solid waste, all-in-one.  They both lay eggs (except for the live birth species of fish). 

they have light bones. They're streamlined. They both lay eggs. Some fish have  pointed mouths, sorta like birds. They both have tails.....to act as a rudder.  Some fish have wings and  "fly " , but not very far. The fins on the fish are kinda like wings. Some species of birds and fish migrate every year.

Your guysmare helping me a little, but I don't think. Got all the info I need, but what mycatsmom said helped me a lot, thanks!