{"id":{"repo_id":"lethbridge","oai_identifier":"oai:opus.uleth.ca:10133/3509"},"canonical_url":"https://search.dev.ndltd.org/etd/lethbridge/oai:opus.uleth.ca:10133/3509","repository":{"repo_id":"lethbridge","name":"University of Lethbridge","base_url":"https://opus.uleth.ca/server/oai/request"},"display":{"title":"Distant Drumming: morphological correlates of habitat and courtship behaviour in the Ruffed Grouse (Bonasa umbellus)","abstract":"The Ruffed Grouse (Bonasa umbellus) is a resident game bird of North America. Unlike other birds, male Ruffed Grouse do not vocalize during courtship, and are dependent upon ‘drumming’, a ‘wingbeat’ display, for the acoustic component of their courtship behaviour. Because this wingbeat display is unique, I investigated morphological correlates that could underlie its production. First, I examined wing shape among grouse from museum specimens using various morphometrics. I found that wing morphology corresponds with habitat, behaviour and phylogentic relationships within Tetraoninae. Next, I examined the brains of male and female Ruffed Grouse. I detected seasonal plasticity between males collected during the breeding and non-breeding seasons; those collected during the breeding season had larger motor regions than those collected during the non-breeding season. My findings indicate that habitat and wing shape are correlated among grouse, and that seasonal changes in brain morphology contribute to the production of the drumming display.","abstract_html":"The Ruffed Grouse (Bonasa umbellus) is a resident game bird of North America. Unlike other birds, male Ruffed Grouse do not vocalize during courtship, and are dependent upon ‘drumming’, a ‘wingbeat’ display, for the acoustic component of their courtship behaviour. Because this wingbeat display is unique, I investigated morphological correlates that could underlie its production. First, I examined wing shape among grouse from museum specimens using various morphometrics. I found that wing morphology corresponds with habitat, behaviour and phylogentic relationships within Tetraoninae. Next, I examined the brains of male and female Ruffed Grouse. I detected seasonal plasticity between males collected during the breeding and non-breeding seasons; those collected during the breeding season had larger motor regions than those collected during the non-breeding season. My findings indicate that habitat and wing shape are correlated among grouse, and that seasonal changes in brain morphology contribute to the production of the drumming display.","abstract_has_math":false,"creators":["Krilow, Justin M."],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-10-03","date_published":"2014-10-03","updated_at":"2026-07-27T20:02:17Z","subjects":["Avian brain,","courtship behaviour","geometric morphometrics","Ruffed Grouse","seasonal plasticity","wing shape"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["hdl:10133/3509"],"render_values":[{"text":"hdl:10133/3509","href":null,"code":true}]}]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2014-10-03"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Avian brain,","courtship behaviour","geometric morphometrics","Ruffed Grouse","seasonal plasticity","wing shape"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["hdl:10133/3509"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.other","label":"Dc Description Other","values":["The Ruffed Grouse (Bonasa umbellus) is a resident game bird of North America. Unlike other birds, male Ruffed Grouse do not vocalize during courtship, and are dependent upon ‘drumming’, a ‘wingbeat’ display, for the acoustic component of their courtship behaviour. Because this wingbeat display is unique, I investigated morphological correlates that could underlie its production. First, I examined wing shape among grouse from museum specimens using various morphometrics. I found that wing morphology corresponds with habitat, behaviour and phylogentic relationships within Tetraoninae. Next, I examined the brains of male and female Ruffed Grouse. I detected seasonal plasticity between males collected during the breeding and non-breeding seasons; those collected during the breeding season had larger motor regions than those collected during the non-breeding season. My findings indicate that habitat and wing shape are correlated among grouse, and that seasonal changes in brain morphology contribute to the production of the drumming display."]},{"key":"dc:title","label":"Title","values":["Distant Drumming: morphological correlates of habitat and courtship behaviour in the Ruffed Grouse (Bonasa umbellus)"]}]}],"canonical_facts":{"dc:date.issued":["2014-10-03"],"dc:description.other":["The Ruffed Grouse (Bonasa umbellus) is a resident game bird of North America. Unlike other birds, male Ruffed Grouse do not vocalize during courtship, and are dependent upon ‘drumming’, a ‘wingbeat’ display, for the acoustic component of their courtship behaviour. Because this wingbeat display is unique, I investigated morphological correlates that could underlie its production. First, I examined wing shape among grouse from museum specimens using various morphometrics. I found that wing morphology corresponds with habitat, behaviour and phylogentic relationships within Tetraoninae. Next, I examined the brains of male and female Ruffed Grouse. I detected seasonal plasticity between males collected during the breeding and non-breeding seasons; those collected during the breeding season had larger motor regions than those collected during the non-breeding season. My findings indicate that habitat and wing shape are correlated among grouse, and that seasonal changes in brain morphology contribute to the production of the drumming display."],"dc:identifier":["hdl:10133/3509"],"dc:subject":["Avian brain,","courtship behaviour","geometric morphometrics","Ruffed Grouse","seasonal plasticity","wing shape"],"dc:title":["Distant Drumming: morphological correlates of habitat and courtship behaviour in the Ruffed Grouse (Bonasa umbellus)"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T20:02:17Z"}