Crowbirds presented two projects at the 14th American Association for Corpus Linguistics (AACL): “Annotating learner data for lexico-grammatical patterns: A comparison of software tools” and “Lexico-grammatical Patterns in First Year Writing across L1 Backgrounds,” Our first presentation compared the uses and performance of Biber tagger, MALT parser, and Stanford parser. Our second presentation analyzed the linguistic features of L1 writers compared to L2 writers.