Fill in the Blanks Bird gaps!!Online version Fill in the gaps with the riht words!!! by Evaristo Jaén García 1 fly feet oviparous wings Birds walk tail feathers air webbed lungs beaks Birds have , two and a . Many of them live on land . They can , and most birds can . Other birds , such as ducks , live on land and in water . They have to help them swim . Birds do not have teeth , they have . Birds breathe with their . They are .