Monarch Population Status

1 May 2020 | Author: Chip Taylor

As of yesterday (30 April), the numbers are only 4 and 16 and that’s the way I like 'em. The 4 is the number of sightings of monarchs North of 40°N on the Journey North website. Four is enough, I ...

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Monarch Population Status

20 April 2020 | Author: Chip Taylor

I have a confession to make. Well, actually, several. First, at this writing (12 April), I have no idea as to whether the monarch population is likely to increase or decrease this year. The signals are mixed. March temperatures in ...

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Monarch Population Status

13 March 2020 | Author: Jim Lovett

World Wildlife Fund Mexico in collaboration with CONANP and the Monarch Butterfly Biosphere Reserve (MBBR) announced the total forest area occupied by overwintering monarch colonies today. Eleven (11) colonies were located this winter season with a total area of 2.83 ...

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Monarch Population Status

17 November 2019 | Author: Chip Taylor

Why overwintering monarch numbers will be lower this year I've had an answer in mind for weeks. It's been dogging me. The question that's the basis for this answer has many parts, and not all the parts have come together. It's ...

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Monarch Population Status

17 June 2019 | Author: Chip Taylor

Stage 4 (1 May–9 June) Update As I indicated in the Status of the Population post to the Monarch Watch Blog on 2 May, I partition the annual cycle into 6 stages in an effort to understand the interannual variation in ...

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Monarch Population Status

2 May 2019 | Author: Chip Taylor

Stage 3 (March–April) Update As most of you know, I endeavor to predict how the monarch population is developing each year. While I always fail to correctly predict the exact number of hectares measured at the overwintering sites, I’m getting better ...

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Monarch Population Status

15 March 2019 | Author: Chip Taylor

Will the population increase again this year? Last season the population increased from 2.48 hectares to 6.05 (see the January 30th Monarch Population Status announcement). If the monarchs wintered well, that is with a normal rate of mortality and morbidity, ...

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Monarch Population Status

30 January 2019 | Author: Jim

World Wildlife Fund Mexico in collaboration with CONANP and the Monarch Butterfly Biosphere Reserve (MBBR) announced the total forest area occupied by overwintering monarch colonies today. Fourteen (14) colonies were located this winter season with a total area of 6.05 ...

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Monarch Population Status

10 September 2018 | Author: Chip Taylor

It’s been more than a few years since we have seen a monarch migration as promising as the one that is taking place at this time (early September). The first fall roosts were reported to Journey North on the 11 ...

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Monarch Population Status

3 August 2018 | Author: Chip Taylor

When it comes to estimating the size of the migration, each year is a series of experiments, with numerous hypotheses, during which I try to match what I know about monarchs with the progression of the seasonal conditions that influence ...

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