First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018
Many bird species have advanced their first egg dates in response to recent milder winters and increases in spring temperatures. Tree Swallows ( Tachycineta bicolor ) begin egg laying earlier in warmer springs at most, but not all, study sites. We examined whether Tree Swallows that nested in boxes...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Resilience Alliance
2024-03-01
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| Series: | Journal of Field Ornithology |
| Subjects: | |
| Online Access: | https://journal.afonet.org/vol95/iss1/art12 |
| _version_ | 1797234706321768448 |
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| author | Michael P Lombardo Nathaniel Wagner Jared M Laughlin Sango Otieno Levi Rosendall Clara Voetberg Alejandro Hoban |
| author_facet | Michael P Lombardo Nathaniel Wagner Jared M Laughlin Sango Otieno Levi Rosendall Clara Voetberg Alejandro Hoban |
| author_sort | Michael P Lombardo |
| collection | DOAJ |
| description | Many bird species have advanced their first egg dates in response to recent milder winters and increases in spring temperatures. Tree Swallows ( Tachycineta bicolor ) begin egg laying earlier in warmer springs at most, but not all, study sites. We examined whether Tree Swallows that nested in boxes in west Michigan responded to an increase in spring temperatures from 1993 to 2018 by advancing their first egg dates. May, but not April, mean daily temperatures got significantly warmer from 1993 to 2018. We found that the first egg dates, but not mean first egg dates, of both second year (SY) and after second year (ASY) females got earlier between 1993 and 2018. The first egg dates of SY females did not get earlier in response to warmer April or May temperatures but got earlier when there were more days in May with measurable rain. The first egg dates of ASY females got earlier with warmer April and May temperatures. Overall, the relationships between weather conditions and first egg dates of both SY and ASY females were complex and varied yearly. The climatic conditions that influence Tree Swallow first egg dates are complex because stochastic rain and wind conditions interact with air temperatures to affect the availability of the aerial insect prey of swallows thereby influencing the ability of females to begin egg laying. |
| first_indexed | 2024-04-24T16:36:19Z |
| format | Article |
| id | doaj.art-be407461d93b48878584a653c0968551 |
| institution | Directory Open Access Journal |
| issn | 1557-9263 |
| language | English |
| last_indexed | 2024-04-24T16:36:19Z |
| publishDate | 2024-03-01 |
| publisher | Resilience Alliance |
| record_format | Article |
| series | Journal of Field Ornithology |
| spelling | doaj.art-be407461d93b48878584a653c09685512024-03-29T16:27:37ZengResilience AllianceJournal of Field Ornithology1557-92632024-03-019511210.5751/JFO-00434-950112434First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018Michael P Lombardo0Nathaniel Wagner1Jared M Laughlin2Sango Otieno3Levi Rosendall4Clara Voetberg5Alejandro Hoban6Biology Department, Grand Valley State UniversityBiology Department, Grand Valley State UniversityBiology Department, Grand Valley State UniversityStatistics Department, Grand Valley State UniversityStatistics Department, Grand Valley State UniversityStatistics Department, Grand Valley State UniversityStatistics Department, Grand Valley State UniversityMany bird species have advanced their first egg dates in response to recent milder winters and increases in spring temperatures. Tree Swallows ( Tachycineta bicolor ) begin egg laying earlier in warmer springs at most, but not all, study sites. We examined whether Tree Swallows that nested in boxes in west Michigan responded to an increase in spring temperatures from 1993 to 2018 by advancing their first egg dates. May, but not April, mean daily temperatures got significantly warmer from 1993 to 2018. We found that the first egg dates, but not mean first egg dates, of both second year (SY) and after second year (ASY) females got earlier between 1993 and 2018. The first egg dates of SY females did not get earlier in response to warmer April or May temperatures but got earlier when there were more days in May with measurable rain. The first egg dates of ASY females got earlier with warmer April and May temperatures. Overall, the relationships between weather conditions and first egg dates of both SY and ASY females were complex and varied yearly. The climatic conditions that influence Tree Swallow first egg dates are complex because stochastic rain and wind conditions interact with air temperatures to affect the availability of the aerial insect prey of swallows thereby influencing the ability of females to begin egg laying.https://journal.afonet.org/vol95/iss1/art12climate changefirst egg datenest boxtachycineta bicolortree swallow |
| spellingShingle | Michael P Lombardo Nathaniel Wagner Jared M Laughlin Sango Otieno Levi Rosendall Clara Voetberg Alejandro Hoban First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018 Journal of Field Ornithology climate change first egg date nest box tachycineta bicolor tree swallow |
| title | First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018 |
| title_full | First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018 |
| title_fullStr | First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018 |
| title_full_unstemmed | First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018 |
| title_short | First egg dates of Tree Swallows ( Tachycineta bicolor ) nesting in boxes in west Michigan advanced with increasing spring temperatures between 1993 and 2018 |
| title_sort | first egg dates of tree swallows tachycineta bicolor nesting in boxes in west michigan advanced with increasing spring temperatures between 1993 and 2018 |
| topic | climate change first egg date nest box tachycineta bicolor tree swallow |
| url | https://journal.afonet.org/vol95/iss1/art12 |
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