The latest Breeding Bird Survey results show a decrease in all countries. Birders are naturally curious to identify the birds they see, and identifying bird eggs is part of that curiosity.For birdhouse landlords, identifying eggs can help them understand which birds prefer their houses, and they can adjust the foods they offer and how bird-friendly their yard is to better suit each feathered family.
Linnet numbers have dropped substantially over the past few decades, with the UK population estimated to have declined by 57 per cent between 1970 and 2014.