Junior A. Tremblay

Scientific researcher,
Environnement et Changement climatique Canada

Direction générale des sciences et de la technologie
E-mail: Junior.Tremblay@canada.ca


  • PhD, Université du Québec à Chicoutimi, 2009
  • MSc, Université Laval, 2004
  • BSc, Université Laval, 2002


My research program aims to study habitat selection and population dynamics of Boreal birds and to better understand the impacts of natural and anthropogenic disturbances on their populations in the context of climate changes. As such, I wish to develop applied scientific knowledge useful for migratory bird conservation, species at risk and their habitats.

Examples of species studied

Falco peregrinus
Picoides arcticus


49- An indicator species highlights continuous deadwood supply is a key ecological attribute of boreal old-growth forests
Journal Article
Martin M , Tremblay J A , Ibarzabal J , Morin H ,
2021 Ecosphere (Date Added: 2021-06-11)

48- Spatial structure in migration routes maintained despite regional convergence among eastern populations of Swainson’s Thrushes
Journal Article
Bégin-Marchand C , Desrochers A , Taylor P D , Tremblay J A , Berrigan L , Frei B , Morales A , Mitchell G W ,
2021 Movement Ecology (Date Added: 2021-05-30)

47- Habitat loss on the breeding grounds is a major contributor to population declines in a long-distance migratory songbird
Journal Article
Hallworth M T , Bayne E , McKinnon E , Love O , Tremblay J A , Drolet B , Ibarzabal J , Van Wilgenburg S , Marra P P ,
2021 Proceedings of the Royal Society B: Biological Sciences (Date Added: 2021-05-18)

46- Comprehensive estimation of spatial and temporal migratory connectivity across the annual cycle to direct conservation efforts
Journal Article
Knight E C , Harrison A , Scarpignato A L , Van Wilgenburg S L , Bayne E M , Ng J W , Angell E , Bowman R , Brigham R M , Drolet B , Easton W E , Forrester T R , Foster J T , Haché S , Hannah K C , Hick K G , Ibarzabal J , Imlay T L , Mackenzie S A , Marsh A , McGuire L P , Newberry G N , Newstead D , Sidler A , Sinclair P H , Stephens J L , Swanson D L , Tremblay J A , Marra P P ,
2021 Ecography (Date Added: 2021-02-09)

45- Occupancy of the american three-toed woodpecker in a heavily-managed boreal forest of eastern canada
Journal Article
Lamarre V , Tremblay J A ,
2021 Diversity (Date Added: 2021-02-04)

44- Comparing fall migration of three Catharus species using a radio-telemetry network
Journal Article
Marchand C B , Desrochers A , Tremblay J A , Côté P ,
2020 Animal Migration (Date Added: 2020-11-17)

43- Widely distributed breeding populations of Canada warbler (Cardellina canadensis) converge on migration through Central America
Journal Article
Roberto-Charron A , Kennedy J , Reitsma L , Tremblay J A , Krikun R , Hobson K A , Ibarzabal J , Fraser K C ,
2020 BMC Zoology (Date Added: 2020-10-25)

42- A cost efficient spatially balanced hierarchical sampling design for monitoring boreal birds incorporating access costs and habitat stratification
Journal Article
Van Wilgenburg S L , Mahon C L , Campbell G , McLeod L , Campbell M , Evans D , Easton W , Francis C M , Haché S , Machtans C S , Mader C , Pankratz R F , Russell R , Smith A C , Thomas P , Toms J D , Tremblay J A ,
2020 PloS one (Date Added: 2020-06-29)

41- Testing the effect of snag and cavity supply on deadwood-associated species in a managed boreal forest
Journal Article
Dufour-Pelletier S , A Tremblay J , Hébert C , Lachat T , Ibarzabal J ,
2020 Forests (Date Added: 2020-06-25)

40- Projected effects of climate change on boreal bird community accentuated by anthropogenic disturbances in western boreal forest, Canada
Journal Article
Cadieux P , Boulanger Y , Cyr D , Taylor A R , Price D T , Sólymos P , Stralberg D , Chen H , Brecka A , Tremblay J A ,
2020 Diversity and Distributions (Date Added: 2020-04-06)

39- Differential habitat selection in boreal songbirds influences estimates of population size and distribution
Journal Article
Crosby A D , Bayne E M , Cumming S G , Schmiegelow F K A , Dénes F V , Tremblay J A ,
2019 Diversity and Distributions (Date Added: 2019-11-11)

38- Conservation planning for boreal birds in a changing climate: A framework for action
Journal Article
Stralberg D , Berteaux D , Drever C R , Drever M , Naujokaitis-Lewis I , Schmiegelow F K A , Tremblay J A ,
2019 Avian Conservation and Ecology (Date Added: 2019-08-26)

37- Predictors of habitat use and nesting success for two sympatric species of boreal woodpeckers in an unburned, managed forest landscape
Journal Article
Craig C , Mazerolle M J , Taylor P D , Tremblay J A , Villard M ,
2019 Forest Ecology and Management (Date Added: 2019-02-26)

36- Foraging ecology of the Williamson's Sapsucker: Implications for forest management
Journal Article
St-Amand, J, Tremblay, JA, Martin, K
2018 The Condor (Date Added: 2018-09-10)

35- Range extension of the threatened Red Crossbill (Loxia curvirostra percna) in Canada: new insights from Anticosti Island, Québec
Journal Article
Tremblay, JA, Robert, M, Hynes, DP, Young, MA, Drolet, B
2018 Avian Conservation and Ecology (Date Added: 2018-09-10)

34- American Three-toed Woodpecker (Picoides dorsalis)
Book Chapter
Tremblay, JA, Leonard Jr , DL, Imbeau, L, Rodewald, PG
2018 The Birds of North America Online (Date Added: 2018-09-10)

33- Harvesting interacts with climate change to affect future habitat quality of a focal species in eastern Canada’s boreal forest
Journal Article
Tremblay J A , Boulanger Y , Cyr D , Taylor A R , Price D T , St-Laurent M ,
2018 PLoS ONE (Date Added: 2018-02-18)

32- Écologie de nidification du moucherolle à côtés olive dans un paysage sous aménagement forestier de la forêt boréale de l’Est
Journal Article
Anctil, A, Johansen, HM, Tremblay, JA
2017 Le Naturaliste canadien (Date Added: 2017-09-13)

31- A Low-Cost Technique for Radio-Tracking Wildlife Using a Small Standard Unmanned Aerial Vehicle
Journal Article
Tremblay, JA, Desrochers, A, Aubry, Y, Pace, P, Bird, DM
2017 Journal of Unmanned Vehicle Systems (Date Added: 2017-09-13)

30- Black-backed Woodpecker (Picoides arcticus)
Journal Article
Tremblay, JA, Dixon, RD, Saab, VA, Pyle, P, Patten, MA, Rodewald, PG
2017 The Birds of North America Online (Date Added: 2017-09-13)

29- Parental care by Black-backed Woodpeckers in burned and unburned habitats of eastern Canada
Journal Article
Tremblay, JA, Ibarzabal, J, Saulnier, M-C, Wilson, S
2016 Ornis Hungarica (Date Added: 2016-08-30)

28- Limitations and mechanisms influencing the migratory performance of soaring birds
Journal Article
Miller, TA, Brooks, RP, Lanzone, MJ, Brandes, D, Cooper, J, Tremblay, JA, Wilhelm, J, Duerr, A, Katzner, TE, Kelly, J
2016 Ibis (Date Added: 2016-03-08)

27- Contribution of unburned boreal forests to the population of black-backed woodpecker in eastern Canada
Journal Article
Tremblay, JA, Ibarzabal, J, Savard, J-PL
2015 Écoscience (Date Added: 2016-07-04)

26- Captures accidentelles d’aigles royaux et de pygargues à tête blanche par les trappeurs d’animaux à fourrure au Québec
Fitzgerald, G, Tremblay, JA, Lemaître, J, St-Louis, A
2015 Le Naturaliste canadien (Date Added: 2016-03-08)

25- Mise en place d’un inventaire spécifique du hibou des marais pour le Québec
Gagnon, C, Lemaître, J, Lupien, G, Tremblay, JA
2015 Le Naturaliste canadien (Date Added: 2016-03-08)

24- Habitat du faucon pèlerin dans le sud du Québec durant la période de reproduction : conséquences pour l’implantation de parcs éoliens
Lapointe, J, Tremblay, JA, Mazerolle, MJ, Imbeau, L, Maisonneuve, C
2015 Le Naturaliste canadien (Date Added: 2016-03-08)

23- Abondance et répartition de l’aigle royal au Québec
Morneau, F, Tremblay, JA, Lemaître, J
2015 Le Naturaliste canadien (Date Added: 2016-03-08)

22- Abondance de l’épervier brun en migration automnale : relations avec l’oscillation nord-atlantique et l’abondance de ses proies
Savard, J-PL, Côté, P, Tremblay, JA
2015 Le Naturaliste canadien (Date Added: 2016-03-08)

21- Structural retention requirements for a key ecosystem engineer in conifer-dominated stands of a boreal managed landscape in eastern Canada
Journal Article
Tremblay, JA, Savard, J-PL, Ibarzabal, J
2015 Forest Ecology and Management (Date Added: 2016-02-29)

20- Use of multiple modes of flight subsidy by a soaring terrestrial bird, the golden eagle Aquila chrysaetos, when on migration
Journal Article
Katzner, TE, Turk, PJ, Duerr, AE, Miller, TA, Lanzone, MJ, Cooper, JL, Brandes, D, Tremblay, JA, Lemaître, J
2015 Journal of the Royal Society Interface (Date Added: 2016-02-29)

19- Flight response of slope-soaring birds to seasonal variation in thermal generation
Journal Article
Duerr, AE, Miller, TA, Lanzone, M, Brandes, D, Cooper, J, O'Malley, K, Maisonneuve, C, Tremblay, JA, Katzner, T
2015 Functional Ecology (Date Added: 2016-02-29)

18- Known Breeding Distribution and Abundance of Golden Eagles in Eastern North America
Journal Article
Morneau, F, Tremblay, JA, Todd, C, Chubbs, TE, Maisonneuve, C, Lemaître, J, Katzner, T
2015 Northeastern Naturalist (Date Added: 2016-02-29)

17- Assessing risk to birds from industrial wind energy development via paired resource selection models
Journal Article
Miller, TA, Brooks, RP, Lanzone, M, Brandes, D, Cooper, J, O'Malley, K, Maisonneuve, C, Tremblay, J, Duerr, A, Katzner, T
2014 Conservation Biology (Date Added: 2016-02-29)

16- High risk of lead contamination for scavengers in an area with high moose hunting success
Journal Article
Legagneux, P, Suffice, P, Messier, J-S, Lelievre, F, Tremblay, JA, Maisonneuve, C, Saint-Louis, R, Bêty, J
2014 PLoS ONE (Date Added: 2016-02-29)

15- Influence of old coniferous habitat on nestling growth of black-backed woodpeckers picoides arcticus
Journal Article
Tremblay, JA, Ibarzabal, J, Savard, J-PL, Wilson, S
2014 Acta Ornithologica (Date Added: 2016-02-29)

14- Habitat use by female Peregrine Falcons (Falco peregrinus) in an agricultural landscape
Journal Article
Lapointe, J, Imbeau, L, Tremblay, JA, Maisonneuve, C, Mazerolle, MJ
2013 Auk (Date Added: 2016-02-29)

13- Inventaire quinquennal 2010 du faucon pèlerin au Québec méridional : état de la population québécoise
Tremblay, JA, Fradette, P, Shaffer, F, Gauthier, I
2012 Le Naturaliste canadien (Date Added: 2016-03-08)

12- Breeding status and population trends of Golden Eagles in northeastern Québec, Canada
Journal Article
Morneau, F, Gagnon, B, Poliquin, S, Lamothe, P, D'Astous, N, Tremblay, JA
2012 Avian Conservation and Ecology (Date Added: 2016-02-29)

11- Flight responses by a migratory soaring raptor to changing meteorological conditions
Journal Article
Lanzone, MJ, Miller, TA, Turk, P, Brandes, D, Halverson, C, Maisonneuve, C, Tremblay, J, Cooper, J, O'Malley, K, Brooks, RP, Katzner, T
2012 Biology Letters (Date Added: 2016-02-29)

10- Topography drives migratory flight altitude of golden eagles: Implications for on-shore wind energy development
Journal Article
Katzner, TE, Brandes, D, Miller, T, Lanzone, M, Maisonneuve, C, Tremblay, JA, Mulvihill, R, Merovich, GT
2012 Journal of Applied Ecology (Date Added: 2016-02-29)

9- Testing an emerging paradigm in migration ecology shows surprising differences in efficiency between flight modes
Journal Article
Duerr, AE, Miller, TA, Lanzone, M, Brandes, D, Cooper, J, O'Malley, K, Maisonneuve, C, Tremblay, J, Katzner, T
2012 PloS one (Date Added: 2016-02-29)

8- Estimating updraft velocity components over large spatial scales: Contrasting migration strategies of golden eagles and turkey vultures
Journal Article
Bohrer, G, Brandes, D, Mandel, JT, Bildstein, KL, Miller, TA, Lanzone, M, Katzner, T, Maisonneuve, C, Tremblay, JA
2012 Ecology Letters (Date Added: 2016-02-29)

7- Status, biology, and conservation priorities for North America's Eastern golden eagle (Aquila chrysaetos) population
Journal Article
Katzner, T, Smith, BW, Miller, TA, Brandes, D, Cooper, J, Lanzone, M, Brauning, D, Farmer, C, Harding, S, Kramar, DE, Koppie, C, Maisonneuve, C, Martell, M, Mojica, EK, Todd, C, Tremblay, JA, Wheeler, M, Brinker, DF, Chubbs, TE, Gubler, R, O'Malley, K, Mehus, S, Porter, B, Brooks, RP, Watts, BD, Bildstein, KL
2012 Auk (Date Added: 2016-02-29)

6-Le pygargue à tête blanche au Québec : un prompt rétablissement
Shaffer, F, Fradette P , Tremblay, JA, Deschênes, L
2010 Le Naturaliste Canadien ( Date Added: 2016-03-08)

5-Les chauves-souris arboricoles en situation précaire au Québec: Synthèse et perspectives
Tremblay, JA, Jutras, J
2010 Le Naturaliste Canadien ( Date Added: 2016-03-08)

4- Foraging ecology of black-backed woodpeckers (Picoides arcticus) in unburned eastern boreal forest stands
Journal Article
Tremblay, JA, Ibarzabal, J, Savard, J-PL
2010 Canadian Journal of Forest Research (Date Added: 2016-02-29)

3- Habitat requirements of breeding black-backed woodpeckers (Picoides arcticus) in managed, unburned boreal forest
Journal Article
Tremblay, JA, Ibarzabal, J, Dussault, C, Savard, J-PL
2009 Avian Conservation and Ecology (Date Added: 2016-02-29)

2- The passive restoration of the second-growth mixed fir stands: An alternative for the conservation of the old-growth mixed fir forests
Journal Article
Tremblay, JA, Bélanger, L, Desponts, M, Brunet, G
2007 Canadian Journal of Forest Research (Date Added: 2016-02-29)

1- The hole saw method for accessing woodpecker nestlings during developmental studies
Journal Article
Ibarzabal, J, Tremblay, JA
2006 Annales Zoologici Fennici (Date Added: 2016-02-29)

In the media