Bird Sudoku Level 80 Hint
Pick a row, column, or habitat with a low remaining count, then check which of its perch cells are blocked by open diagonal flight lines.
Bird Sudoku Level 80 Strategy
Medium Level 80 uses a 7x7 board with 19 perch cells, 6 blockers, and 9 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 80 Solution
Bird positions in the solution: R1C5, R2C5, R3C1, R4C4, R5C1, R5C7, R6C3, R6C5.