You plant enough of them that the birds can have their fill and you can still harvest some. You can place fine mesh netting around the ripening flower heads to prevent the birds from eating them all.
You might consider netting your tomato plants to prevent the birds from eating them.
There are many animals that eat sunflowers and their seeds. Caterpillars do feed on the actual sunflower, while deer enjoy the leaves from the plant. Humans, squirrels, many types of birds, and rabbits eat the sunflower seeds.
wrap the mangoes in plastic bags
Birds are often wary of squirrels because squirrels can raid bird feeders and nests for food, which can be a threat to birds and their eggs. However, the fear level can vary among different bird species and depends on the individual bird's behavior and experience with squirrels. In general, birds will avoid areas where they feel threatened by squirrels.
Birds and their eggs, and rodents, like squirrels. Birds and their eggs, squirrels.
Squirrels, cats, dogs, cold. To prevent those: buy a squirrel baffle (a tool that hangs on a birdhouse and is slippery so they fall off) get an indoor cat hang the bird feeder where your dog cannot get to it and feed the birds all year so they stay during the winter.
hawks and birds
Yes. In fact, this is often selectively bred for, to stop birds from eating the seeds.
Many types of birds such as woodpeckers nest in trees, squirrels LOVE oak trees (for their acorns) and there are tree lizards also.
A cat might but squirrels are a bit too large for the average house cat to eat. Cats will eat mice and small birds (but only if they learned to eat them, killing them is instinctive but eating them as food must be learned).
Make a wire and mesh fence to keep them out of your garden.
They've learned some dark magic? No! Birds of prey are taking them out as the birds loose habitat. The birds have learned there is lots to eat in the 'burbs, like squirrels, chipmunks and poodles.