Bird Sudoku Level 1 Hint
Start with habitats that contain only a few available perches. A tight habitat can often force the first bird before the diagonal rule becomes complicated.
Bird Sudoku Level 1 Strategy
Easy Level 1 uses a 6x6 board with 11 perch cells, 4 blockers, and 5 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 1 Solution
Bird positions in the solution: R1C1, R2C4, R3C4, R6C3, R6C5.