Monarch Watch Blog

Archive for the ‘Monarch Population Status’ Category

Development of the 2022 monarch population so far

18 May 2022 | Author: Chip Taylor

Predicting how the population will develop each year is a challenge. As recently as the 22nd of April, we posted a rather dismal account of the status of the population. This assessment was based on reports to Journey North, iNaturalist ...

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Monarch Population Status

22 April 2022 | Author: Chip Taylor

I have looked at a lot of monarch and weather data over the years in attempts to understand the factors that influence the development of the population. These factors include the number of monarchs returning to Texas from Mexico, whether ...

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How many hectares in 2021-2022?

6 January 2022 | Author: Chip Taylor

Each year, at about this time, I administer a test – to myself. I have one question. How big, in term of hectares*, will the overwintering population be this year? Technically, I fail the test every time and expect to. ...

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Monarch Population Status

17 August 2021 | Author: Chip Taylor

The migration is underway! EASTERN MONARCHS As you may remember, earlier I offered that the recolonization this past May and early June of the summer breeding area was quite favorable. Monarchs generally arrived on time and in good numbers leading to a ...

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Monarch Population Status

25 February 2021 | 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. Nine (9) colonies were located this winter season with a total area of 2.10 ...

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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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