Dissertation Research: Adaptive Basis of Delayed Maturation
{'Code': '08010207', 'Directorate': {'Abbreviation': 'BIO', 'LongName': 'Direct For Biological Sciences'}, 'Division': {'Abbreviation': 'DEB', 'LongName': 'Division Of Environmental Biology'}}
{'SignBlockName': 'Joann P. Roskoski', 'PO_EMAI': None, 'PO_PHON': None}
The bright coloration of birds has always intrigued                        ornithologists, yet relatively few studies have specifically                    addressed the adaptive value of bright breeding plumage.  This                  study examines two aspects of plumage coloration in male and                    female Purple Martins: why do older birds have a brightly colored               plumage, and why do young birds have a dull, subadult breeding                  plumage?  This will be the first intensive study of Purple                      Martins in a natural habitat.  Plumage dyeing experiments will                  determine the role that plumage color plays in a birds ability to               defend its nesting site from competitors.  The intensity of                     competition for nesting cavities and young birds' use of specific               behavioral tactics to compete with older birds for opportunities                to breed will be evaluated.  Observations of aggressive                         interactions between subadult and adult birds will determine                    whether young birds are subject to less aggression because of                   their non-threatening, subadult plumage.
{'FirstName': 'Charles', 'LastName': 'Brown', 'PI_MID_INIT': 'R', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Charles R Brown', 'EmailAddress': 'charles-brown@utulsa.edu', 'NSF_ID': '000375933', 'StartDate': '06/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Yale University', 'CityName': 'NEW HAVEN', 'ZipCode': '065113572', 'PhoneNumber': '2037854689', 'StreetAddress': '150 MUNSON ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Connecticut', 'StateCode': 'CT', 'CONGRESSDISTRICT': '03', 'CONGRESS_DISTRICT_ORG': 'CT03', 'ORG_UEI_NUM': 'FL6GV84CKN57', 'ORG_LGL_BUS_NAME': 'YALE UNIV', 'ORG_PRNT_UEI_NUM': 'FL6GV84CKN57'}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1127', 'Text': 'Evolutionary Processes'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8800902.xml'}