The New Adventures of Lassie - Season 1 Episode 22 -

After Lassie spots a condor that's been hurt in the wing, Zoe and Harvey must transport the endangered bird to Sarah's clinic. Lassie realizes the Condor has left a chick in her nest and the kids realize they must save TWO generations of this endangered species. With fewer than 400 of these rare birds left alive, their mission is a vital one.