Macaroni penguin female are similar in appearance; males tend to be slightly larger. Males also bear relatively larger bills, which average around compared to in females; this feature has been used to tell the sexes apart. Immature birds are distinguished by their smaller size, smaller, duller-brown bill, dark grey chin and throat, and absent or underdeveloped head plumes, often just a scattering of yellow feathers. The crest is fully developed in birds aged three to four years, a year or two before breeding age. Macaroni penguins moult once a year, a process in which they replace all of their old feathers. They
Romano's Macaroni Grill company-owned stores. On December 18, 2008, Brinker announced that a majority stake in the chain was sold to Mac Acquisition LLC, an affiliate of Golden Gate Capital. As of June 29, 2011, Brinker still holds a 15.6% minority interest in the concept. On 6 February 2013, Ignite Restaurant Group announced the acquisition of Romano's Macaroni Grill from Golden Gate Capital through a $55.0 million all-cash transaction. Redrock Partners LLC purchased the concept from Ignite in April 2015 for $8 million US. On October 18, 2017 Romano's Macaroni Grill filed Chapter 11 Bankruptcy. Romano's Macaroni Grill menu features items found in