Western monarch butterfly numbers in California dropped by 30% last year, researchers say
Par un écrivain mystérieux
Last updated 01 juillet 2024
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Monarch butterflies wintering in California rebound
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://img.huffingtonpost.com/asset/5fdbaf182700003600685f37.jpeg?cache=kzEiVokHbj&ops=1778_1000)
Scientists Need Your Help Spotting Monarch Butterflies This Winter
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://static.wixstatic.com/media/676b19_04cc20b5aa1e4119ab309c829508073e~mv2.jpg/v1/fill/w_980,h_1488,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/676b19_04cc20b5aa1e4119ab309c829508073e~mv2.jpg)
New study shows captive-reared monarchs are wimps and have poorly-suited wings for migration!
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://i.natgeofe.com/n/173dc06a-6469-4f1f-aeed-8b6d20a524c6/01-monarch-203803_2x3.jpg)
Monarch butterfly survival could hinge on more milkweed in cities
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://images.foxweather.com/static.foxweather.com/www.foxweather.com/content/uploads/2022/07/668/376/21c3eba4-3.jpg?ve=1&tl=1)
Winter storms hit monarch butterfly population in California hard, researchers say
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://texasbutterflyranch.com/wp-content/uploads/2017/10/monarchonswampmilkweedllanoriver.jpg)
Endangered Species Act Petition: Wrong Tool for Monarch Butterfly Conservation? – Texas Butterfly Ranch
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://www.nps.gov/common/uploads/articles/images/nri/20210331/articles/68442D2F-E5EA-15AD-6BA1F1B437DF96BC/68442D2F-E5EA-15AD-6BA1F1B437DF96BC.jpg?width=465&height=261&mode=crop&quality=90)
Western Monarch Butterfly Numbers Remain Perilously Low (U.S. National Park Service)
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://scpr.brightspotcdn.com/dims4/default/6877d47/2147483647/strip/true/crop/5124x3290+0+69/resize/690x443!/quality/90/?url=http%3A%2F%2Fscpr-brightspot.s3.us-west-2.amazonaws.com%2F40%2F7d%2Fb56a0ba746309041f9c26279a575%2Fgettyimages-1351143300.jpg)
Butterfly Count Underway
![Western monarch butterfly numbers in California dropped by 30% last year, researchers say](https://www.dailybulletin.com/wp-content/uploads/2024/01/LDN-L-BUTTERFLYBOUNT-1130-03.jpg?w=978)
Western Monarch butterfly wintering population is down in California but steady – Daily Bulletin
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