Bird Sudoku Level 56 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 56 Strategy
Medium Level 56 uses a 8x8 board with 19 perch cells, 7 blockers, and 8 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 56 Solution
Bird positions in the solution: R2C7, R3C4, R4C6, R5C3, R6C5, R8C1, R8C4, R8C8.