JACKSON, MI – Big Red might be a little territorial right now.

The rare peregrine falcon laid a fifth egg April 1—the most she has laid since her and her mate Chayton claimed the top of the Jackson County Tower Building as their home in 2010.

On March 28 we reported Big Red laid three eggs. A few hours later it was discovered she had laid a fourth.

The pair began nesting there after a two-year effort by county officials. The large birds had been seen around the building for many years, but it took the adding of pea gravel to nooks and crannies on the building for nesting to occur.

While Big Red and Chayton are expecting five, not all are guaranteed to hatch.

Click here to watch Big Red nesting live and maybe catch a glimpse of her eggs.

The pair fledged three chicks in 2010, returned in 2011 and fledged three more chicks, and last year fledged four.

Fledge is a stage where the feather and wings are developed for flight and the bird is considered to be in a fully grown state.

The incubation period lasts 29 to 33 days. Chicks fledge for 42 to 46 days after hatching, and remain dependent on their parents for up to two months.