Hint-1 for the bird-puzzle:   The tile with four tails is in a corner.

Hint-2 for the bird-puzzle:   The tile with three tails is in the opposite corner.

Hint-3 for the bird-puzzle:   The 6 tiles having either 2 of same colour or at least 3 of same end touch each other along the perimeter and the matched-up birds on those tiles have the head at the clockwise end.