Dickcissel Night Flights | Home | Spring 2000 | Spring 2001 | Spring 2002 | Spring 2003 | Spring 2004
The graph above shows the total number of confirmed Dickcissel calls detected at each recording station across the transect in the Spring 2000 monitoring season. The data give a rough indication of the distribution of Dickcissel migration (as determined by calling) across the transect. Not all recording stations operated on every night so the station to station comparison needs some interpretation. In particular, the nights of 29-30 April and 30-1 May were missed at Mission High, McAllen High, and Harlingen South High School. Based on the number of calls recorded at other stations on those nights, and the tendencies of these three stations to have high call totals, the totals at these stations would likely have been even higher relative to the other stations.
One of the intriguing results of the Spring 2000 season was the relatively low number of calls recorded at the Science Academy of South Texas (SAT) near Mercedes, TX. There are some indications that a problem with the microphone may have caused the lower numbers detected at SAT but at present the reason is still unknown. The Spring 2001 monitoring will address this question.
See the links below for interesting hour by hour comparisons between stations.
ROM = Roma High School RGC = Rio Grande City High School MIS = Mission High School
MAC = McAllen High School SAT = Science Academy of Texas (Weslaco, TX) HAR = Harlingen South High School
RHH = Rio Hondo High School LAA = Laguna Atascosa National Wildlife Refuge SPI = South Padre Island
map of recording locations