Bird Sudoku Level 108 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 108 Strategy
Hard Level 108 uses a 9x9 board with 29 perch cells, 8 blockers, and 9 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 108 Solution
Bird positions in the solution: R1C9, R2C2, R2C3, R3C5, R4C3, R5C1, R6C9, R7C2, R9C1, R9C7, R9C8.