. Management plan and conservation strategies for sage grouse in Montana - final . 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 Year Figure III-2. Trends in sage grouse lek counts and harvest in Montana, 1958-2003. The amount and timing of spring and summer rainfall affects annual production and population dynamics of sage grouse, causing short term fluctuations (i.e., < 10 years) in sage grouse abundance (Eustace 2002). Wallestad and Watts (1973) identified weather-related factors that affected sage grouse productivity in central Montana. Their findings included: 1. No relationship b

. Management plan and conservation strategies for sage grouse in Montana - final . 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 Year Figure III-2. Trends in sage grouse lek counts and harvest in Montana, 1958-2003. The amount and timing of spring and summer rainfall affects annual production and population dynamics of sage grouse, causing short term fluctuations (i.e., < 10 years) in sage grouse abundance (Eustace 2002). Wallestad and Watts (1973) identified weather-related factors that affected sage grouse productivity in central Montana. Their findings included: 1. No relationship b Stock Photo

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. Management plan and conservation strategies for sage grouse in Montana - final . 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 Year Figure III-2. Trends in sage grouse lek counts and harvest in Montana, 1958-2003. The amount and timing of spring and summer rainfall affects annual production and population dynamics of sage grouse, causing short term fluctuations (i.e., < 10 years) in sage grouse abundance (Eustace 2002). Wallestad and Watts (1973) identified weather-related factors that affected sage grouse productivity in central Montana. Their findings included: 1. No relationship between productivity and rainfall during the hatching period (peak second week of June); Section III 31

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RMRE9NDY–. Management plan and conservation strategies for sage grouse in Montana - final . Sage grouse; Sage grouse; Habitat conservation; Wildlife management; Birds; Bird populations. '/ /A /St // '#' Sss, SS/S //ss, SS// / S/SSS, ss//// '/////, yss////. ^ii™rt—i^MB E N S E ^^SP™N* SAGE [1-10 H] /////// '////// s////// s/ss/ss /////// /////// /////// //// / ssss // S/ , S // sss //// ////, ss/// SSS/S. SS/S/S SS///// /////// I // s ss/j ss/, '///, ////, 'SS//, ////// '/////, ./ ss///, s/////, 'A<,'"''-'<" SSS////, ss///////, '///////V/'/'/, ,•'SSS,''/v/ss/ S/SSSSSS'.'Sss. JUNE (105)

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RMRE9NE0–. Management plan and conservation strategies for sage grouse in Montana - final . Sage grouse; Sage grouse; Habitat conservation; Wildlife management; Birds; Bird populations. 100 80 60 O so- 30- 20- 10. '/ /A /St // '#' Sss, SS/S //ss, SS// / S/SSS, ss//// '/////, yss////. ^ii™rt—i^MB E N S E ^^SP™N* SAGE [1-10 H] /////// '////// s////// s/ss/ss /////// /////// /////// //// / ssss // S/ , S // sss //// ////, ss/// SSS/S. SS/S/S SS///// /////// I // s ss/j ss/, '///, ////, 'SS//, ////// '/////, ./ ss///, s/////, 'A<,'"''-'<" SSS////, ss///////, '///////V/'/'/, ,•'SSS,''/v/ss

RMMAAX0J–. Management plan and conservation strategies for sage grouse in Montana - final . Current sage grouse distribution Historical sage grouse distribution County Stream Figure III-l. Current and historical distribution of sage grouse in Montana. Map provided by MFWP Information Services. Breeding Wallestad (1975) found strutting grounds or "leks," where breeding actually occurs, to be key activity areas within wintering-nesting complexes. Leks most often consist of clearings surrounded by sagebrush cover. Such areas may include natural clearings, old burns, or ground cleared by homeste

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RMRE9NE1–. Management plan and conservation strategies for sage grouse in Montana - final . Sage grouse; Sage grouse; Habitat conservation; Wildlife management; Birds; Bird populations. Reproduction Fall productivity ratios were determined from examination of wings of grouse taken by hunters (Eng 1955, Table III-2). Findings from research in central Montana suggested that years with chick survival of 3.60 juveniles/hen in only four of 41 years (Table III-2). The median chick survival was 2.19 juveniles/hen during this 41-year period. Years in which productivity was >2.19 juveniles/hen were followed