Bird Sudoku Level 158 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 158 Strategy
Hard Level 158 uses a 8x8 board with 24 perch cells, 10 blockers, and 5 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 158 Solution
Bird positions in the solution: R1C7, R2C4, R3C8, R5C3, R5C4, R6C1, R6C7, R7C7, R8C5.