Here are the Fibonacci links in the pdfs pages above::
1 The fascinating article by Helen G. Grundman and Pamela E. Harris called Sequences of Consecutive Happy Numbers in Negative Bases can be found at fq.math.ca/56-3.html ... at least the synopsis can
2 Information about the breeding habits of rabbits at livestocklibrary.com.au/bitstream/handle/1234/5410/ab01012.pdf?sequence=1
3 Estimates of rabbit population at thoughtco.com/feral-rabbits-in-australia-1434350