birdhouse for horse chestnuts made of concrete casting with a number on the bottom for ornithologists. a smaller flight opening me

acer attached bark beautiful bird birdhouse birds blue bottom box branch brown burning burnt camouflage casting chestnut chestnuts circle concrete cylinder dark dimension flight forest garden green handmade here hole hollow horse house large live made means nature nest nesting number opening ornithologists outdoor park pattern plank platanoides product side sitting sky small smaller spring starling sun tanned that titmouse tree trunk type wide winter