More on calcium:
Picture above from:http://avianmedicine.net/content/uploads/2013/03/05_calcium.pdf
Picture above from:http://www.slideshare.net/KatarinaValenzuela/chicken-skull-and-sternum
Above are for chickens, but is probably similar to ducks.
-Kathy
Picture above from:http://avianmedicine.net/content/uploads/2013/03/05_calcium.pdf
Picture above from:http://www.slideshare.net/KatarinaValenzuela/chicken-skull-and-sternum
Above are for chickens, but is probably similar to ducks.
-Kathy