Bird Sudoku Level 52 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 52 Strategy
Medium Level 52 uses a 8x8 board with 19 perch cells, 7 blockers, and 7 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 52 Solution
Bird positions in the solution: R1C1, R1C6, R4C2, R4C5, R5C7, R6C5, R7C7, R8C1.