Chenopodium agg.
The seeds of these closely related plants are especially important for Skylarks in winter. so if you go just let them go at the edge of your veggy patch, especially if it is near open fields, you may just get to hear the wonderful song one day!
Both plants were used as vegetables in the Middle Ages - you can eat the leaves as Spinach; but try to leave some seed heads for the birds.
they are promiscuous cross-breeders, so this seed mixture will contain various hybrids - but they will all feed the wild birds from the multiple seed-heads each plant produces much more cheaply than buying all that bird seed for the birdtable!
Small packets of seed currently available.