Peregrine Falcon History at Commerce Tower

Peregrine Falcon

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Peregrine falcon

  • A total of 24 falcon chicks were hacked (released) during the summers of 1991 and 1992. 
  • Spring of 1994 was the first unsuccessful nesting attempt by an unidentified pair in Kansas City. 
  • Spring of 1997 was the first successful nesting year for Kansas City. The male was, Terr also known as 39X (project band number) released in Kansas City in 1991 and the female was a yearling wild hatched bird (1996) from a site in St. Louis. 
  • The female from St. Louis met her demise in late July of 1997 when she collided with a glass window on a downtown building. 
  • Male 39X returned in 1998 with a new female, identity unknown. 
  • Number of chicks successfully fledged by Downtown pair: 1997, 2 chicks; 1998, 3 chicks; 1999, 2 chicks; 2000, 2 chicks; 2001, unknown – thunderstorm hit and chicks were never seen again; 2002, 4 chicks; 2003, 2 chicks. 
  • Male 39X was one of 11 chicks hacked at Commerce Tower in 1991. He first left the hack box on 5-15-1991 for his flight and came back 23 hours later. He caught his first prey (a grackle) 5 days later. He was the first to exhibit hunting behavior. During 1992, when 13 new chicks were hacked at Commerce Tower, Male 39X exhibited parental behaviors bringing the new chicks food that he caught and aided new fledglings in learning how to fly. 
  • Out of the 24 falcon chicks released in 1991 and 1992, 9 are known to be dead. Fifteen have surviving or unknown status. 39X was at Commerce Tower in 2003. Female 13R, released in 1991 has been nesting in Des Moines, Iowa since 1993. Five other birds were sighted in 1993 and 1994 (in Springfield, IL; Topeka, KS; Tulsa, OK; Memphis, TN; and Omaha, NE), but there have been no other confirmed sightings. 
  • Male 39X died at Lakeside Nature Center on July 24, 2003. He was brought to Lakeside with 2 injuries from a suspected fight with another raptor. The incident occurred in the beginning of June. On the 24th they found him dead. The necropsy found that he was skin and bones even though he was eating well. The vet believes it was old age and possibly kidney failure or diabetes. 
  • March of 2004, the female at Commerce Tower is now in the company of a new male and sitting on the nest box. 
  • June of 2004, Commerce Tower Pair hatched three chicks. Only 2 chicks fledge successfully. One chick died in a collision with a large fan. 
  • June of 2005, Commerce Tower Pair hatched four chicks. Only 3 chicks fledge successfully. One chick died in a collision with a building. 
  • June of 2006, Commerce Tower Pair hatched 3 chicks. All 3 chicks fledge successfully. 
  • June of 2007, Commerce Tower Pair hatched 2 chicks. All chicks fledge successfully. 
  • June of 2008, Commerce Tower Pair hatched 1 chick. 1 chick fledge successfully. 
  • June of 2009, Commerce Tower Pair laid one egg. New female – old female disappeared, presumed dead. New female did not sit on egg. 
  • June of 2010, Commerce Tower Pair hatched 3 chicks. All 3 chicks fledge successfully. 
  • June of 2011, Commerce Tower Pair hatched 3 chicks. All 3 chicks fledge successfully. 
  • June of 2012, Commerce Tower Pair hatched 1 chick (2eggs were originally present). The chick fledged successfully.

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