Bird Sudoku Level 234 Hint
Look for perches that share long open diagonals. If no blocker sits between two possible birds, those placements cannot both be used.
Bird Sudoku Level 234 Strategy
Master Level 234 uses a 10x10 board with 47 perch cells, 12 blockers, and 9 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 234 Solution
Bird positions in the solution: R1C7, R1C8, R2C10, R3C2, R3C3, R4C5, R5C8, R5C9, R6C4, R7C9, R8C7, R10C1, R10C2, R10C6, R10C10.