Bird Sudoku Level 61 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 61 Strategy
Medium Level 61 uses a 8x8 board with 21 perch cells, 7 blockers, and 8 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 61 Solution
Bird positions in the solution: R2C5, R3C1, R3C3, R3C5, R4C8, R5C6, R6C2, R6C4, R6C8.