Bee consistency. Some solitary bees have advanced types of pollen-carrying structures on their bodies. A very few species of solitary bees are being cultured for commercial pollination. Most of these species belong to a distinct set of genera which are commonly known by their nesting behavior or preferences, namely: carpenter bees, sweat bees, mason bees, plasterer bees, squash bees, dwarf carpenter bees, leafcutter bees, alkali bees and digger bees. Most solitary bees nest in the ground in a variety of soil textures and conditions while others create nests in hollow reeds or twigs, holes in wood. The female typically creates a
Coal Digger pushed in as well. The episode was written by Christopher Lloyd co-creator of "Modern Family", making it his second writing credit for the series and first season after the pilot episode. "Coal Digger" was also directed by Jason Winer, his fifth directing credit for the series after directing all previous episodes. The episode, "Coal Digger" originally aired in the United States on October 21, 2009 on American Broadcasting Company as the fifth episode of the series and first season. Andrew Borba guest starred in the episode as the principal of Luke and Manny's school, Mr. Balaban. The episode is also