Bird Sudoku Level 83 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 83 Strategy
Medium Level 83 uses a 7x7 board with 19 perch cells, 6 blockers, and 7 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 83 Solution
Bird positions in the solution: R1C5, R1C7, R2C1, R2C2, R2C5, R4C1, R7C3, R7C5.