http://www.naturenorth.com/winter/grouse/rgrouse2.html

Life Cycle. Spring, from late April through May, is mating season for Ruffed Grouse. Males "drum" to attract females to their territory. A male may drum from the ...

https://ruffedgrousesociety.org/grouse-facts/

Ruffed Grouse are somewhat larger than pigeons, living their entire lives in wooded .... pattern for most of this century, in what is often called a “10-year cycle ”.

http://www.animalspot.net/ruffed-grouse.html

The Ruffed Grouse (pronunciation: ruft growz) is a North American grouse that hovers through the woodlands, and are hard to locate. Belonging to the order.

https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb1257860.pdf

ruffed grouse. LIFE CYCLE. Trees alone do not guarantee the presence of this forest bird. Breeding, nesting and brooding cover and food for the winter are basic ...

https://www.allaboutbirds.org/guide/Ruffed_Grouse/lifehistory

The dappled, grayish or reddish Ruffed Grouse is hard to see, but its “drumming on air” display is a fixture of many spring forests. It can come as a surprise to ...

https://nhpbs.org/natureworks/ruffedgrouse.htm

Ruffed Grouse The male ruffed grouse attracts mates and defends his territory by drumming! He perches on a drumming post, usually ...

https://www.fs.fed.us/database/feis/animals/bird/boum/all.html

The longest recorded life span of a ruffed grouse in northern Minnesota was 7.8 years [65]. Annual survival rates of adult ruffed grouse typically range from 30% ...

http://www.hww.ca/en/wildlife/birds/ruffed-grouse.html

The Ruffed Grouse is adapted to a life in hardwood bush and forest. Its well- adapted beak, legs, wings, and gut permit it to feed by browsing on buds, leaves,  ...

https://birdsna.org/Species-Account/bna/species/rufgro/breeding

Annual cycle of breeding and molt of the Ruffed Grouse in Wisconsin, Alberta, Manitoba, New York, and Minnesota. Young remain with the female until dispersal ...

http://bioweb.uwlax.edu/bio203/s2009/uelmen_kell/reproduction.htm

Reproduction Photo of male grouse drumming, courtesy of Guy L. Monty ... The average life expectancy for the ruffed grouse is 1 year, but if the bird survives its ...