{"id":134,"date":"2023-06-21T00:00:00","date_gmt":"2023-06-21T00:00:00","guid":{"rendered":"http:\/\/weebly-import-post-134"},"modified":"2026-06-17T01:43:21","modified_gmt":"2026-06-17T01:43:21","slug":"teen-volunteers-use-colonial-waterbird-data","status":"publish","type":"wingbeat","link":"https:\/\/sfbbo-test.twomoons.systems\/staging\/1924\/wingbeat\/teen-volunteers-use-colonial-waterbird-data\/","title":{"rendered":"Teen Volunteers Use Colonial Waterbird Data to Investigate Effects of Flora on Bay Area Birds"},"content":{"rendered":"<div class=\"paragraph\">\n<strong>By\u00a0\u200bTeen Volunteers\u00a0<span><span>Peter Covert, Lara Tseng, and Yunjiao (Grace) Xiao<\/span><\/span><\/strong>\n<\/div>\n<div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"A family of Snowy Egrets, including one visible adult, an adult hidden in the back, and four juveniles.\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/bay-farm-island-pic-for-acr-ken-phenicie-copy_orig.jpg?ssl=1\"\/><\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\">\n<span><span>Back in the days of the global shelter-in-place, Nani Welsh, a Science Outreach Intern at SFBBO, created a program bringing together the teenage volunteers at the organization. The idea was to foster a community for teens interested in bird science and conservation and provide mentorship and opportunities to work together through research and outreach projects. Nani reached out to us teens directly, inviting us to be a part of this new program. Virtually gathering together nine of SFBBO\u2019s teen volunteers, we became the first members of the Teen Volunteer Program.<\/span><\/span><br\/>\n<br\/>\n<\/p><\/div><\/div>\n<\/div>\n\n<!--more-->\n\n\n<div>\n\n<\/div>\n<div class=\"paragraph\">\n<span><\/span><span>We met over Zoom to decide on what project we wanted to work on together as a group. Since everyone had a strong interest in avian science and analyzing data, we decided to focus on SFBBO\u2019s <a href=\"\/staging\/1924\/colonial-waterbird-monitoring\/\">Colonial Waterbird Program data<\/a>. Through the Colonial Waterbird Program, SFBBO biologists and volunteers have been tracking numbers of breeding herons, egrets, terns, gulls, and other birds that nest in colonies around the Bay Area since 1982. This program provided us with a large body of data and a variety of ideas for how we could interpret it.<br\/>\n\u200b<\/span>\n<\/div>\n<div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\">\n<span><span style=\"font-weight:700\">OUR QUESTION<br\/><\/span><\/span><br\/>\n<span><span>We all had a great interest in human impacts on birds. After much discussion, we chose to investigate the relationship between colonial waterbirds and native vs. nonnative plants out of our interest in the effect of invasive species. Many species of colonial waterbirds build their nests in vegetation such as trees and bushes that includes both native and non-native plant taxa. Therefore, we wanted to investigate whether colonial waterbirds tended to nest in non-native or native plants to shed light on the importance of these plants to different bird colonies. Many considerations should go into the decision to remove or retain non-native plant taxa, particularly those considered to be invasive, and one of these is how native bird species rely on them for nesting.<br\/>\n\u200b<\/span><\/span><br\/>\n<\/p><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"Great Blue Heron standing over a nest in a Eucalyptus tree\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/vasona-gbhe_orig.png?ssl=1\"\/><\/figure><\/div><\/div>\n<\/div>\n<div class=\"paragraph\">\n<strong><span><span style=\"font-weight:700\">WHAT WE DID &amp; WHAT WE FOUND<\/span><\/span><\/strong><br\/>\n<br\/>\n<span>We studied 26 well-established colonies of various shorebirds and other waterbirds (<a href=\"https:\/\/www.google.com\/maps\/d\/viewer?mid=1VI5xf6GllPggFfRfd14CiLSY-HUBtIg\" target=\"_blank\">interactive map<\/a>). For each of these sites, we collected data on which plants the birds nested on. We tried to identify the plants by collecting photographs and notes from Colonial Waterbird Program volunteers while also using various outside identification resources such as iNaturalist. From here, we were able to observe certain trends between the birds and their nesting tree species.\u00a0<br\/>\n\u200b<\/span><br\/>\n<span><span>We found that there was no significant difference between the preferred tree for each studied bird species. However, we did notice a high percentage of colonies using<\/span> <em><span>Eucalyptus<\/span><\/em> <span>trees (which are nonnative) for nesting sites. For other plants, the usage was roughly evenly split between native and nonnative plant genera.<\/span><\/span>\n<\/div>\n<div>\n<div class=\"wsite-image wsite-image-border-none\" style=\"padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center\">\n<a><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"Graph showing percentage of links of each bird species by tree genus.\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/figure_orig.png?ssl=1\" style=\"width:auto;max-width:100%\"\/><\/a>\n<div style=\"display:block;font-size:90%\">\nProportion of links of each bird species by tree genus, where BCNH = Black-crowned Night-Heron, GREG = Great Egret, SNEG = Snowy Egret, and GBHE = Great Blue Heron. The series in blue represent native trees, and the series in red represent nonnative trees. Note the great overrepresentation of Eucalyptus species.\n<\/div>\n<\/div>\n<\/div>\n<div class=\"paragraph\">\n<br\/>\n<span><span style=\"font-weight:700\">\u200bWHY DO THESE RESULTS MATTER?<br\/>\n\u200b<\/span><\/span><br\/>\n<span><span>Our results find relevance in the environmental debate over whether <em>Eucalyptus<\/em>\u00a0in the Bay Area should be removed. Currently, the debate for and against the removal centers around two issues: the potential fire hazard that trees of the genus<\/span> <em><span>Eucalyptus<\/span><\/em> <span>present, and the threat it poses to native mixed-woodland biodiversity. Since our study shows that these trees are widely used by native waterbird populations, it might be worth considering retaining certain swaths of <em>Eucalyptus\u00a0<\/em>intact to sustain healthy riparian communities. More investigation is needed to determine the best practices for conserving our native biodiversity and ensuring public safety. It would also be interesting to compare the data of bird-tree pairings with the local tree distribution to find a baseline of the relative local abundance of each tree species. This can give us a clearer picture of trends that might exist between bird species or across regions.<br\/>\n\u200b<\/span><\/span>\n<\/div>\n<div class=\"paragraph\">\n<span><span style=\"font-weight:700\">SOME CHALLENGES WE ENCOUNTERED<\/span><\/span><br\/>\n<br\/>\n<span><span>When conducting this study, we encountered challenges that could impact the results. First, identifying the plant species was difficult in many cases due to unavailability of photos or poor quality of photos. When we could not identify the plant species, we excluded the site from our study, which could bias the results. The Colonial Waterbird Program also relies on volunteers to record colonies present at different sites throughout the Bay Area, and lack of volunteer availability can affect the consistency of the data. For example, COVID-19 restrictions impacted the ability of volunteers to assess all the sites. Due to these challenges, we ended up with a small sample size, so our results might not be representative of overall trends in the Bay Area. Nonetheless, our study provides an example of how long-term data collection by scientists and community members can be used to explore questions relevant to avian conservation.<br\/>\n\u200b<\/span><\/span><br\/>\n<\/div>\n<div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\">\n<span><strong>OUR MESSAGE TO YOU<\/strong><br\/>\n<br\/>\nAs with many other organisms during this time of rapidly changing environments, colonially nesting waterbirds need our support if they are to remain healthy and thriving. In order to effectively give this support, we all need to spend more of our time and resources on research to help guide more successful conservation efforts. If you&#8217;re interested in helping waterbirds in the Bay Area or wherever you live, we encourage you to get involved with SFBBO<\/span> <span>or with your local bird conservation organization. Make your home and community more friendly to native birds by planting and protecting native plants, help to support local research projects or volunteer as a citizen scientist, and share your enthusiasm for helping birds with those around you!<\/span>\n<\/p><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"An adult Black-crowned Night-Heron feeding its chick.\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/l-cunningham-claudia-peterson-bcnh-chick-adult_orig.jpg?ssl=1\"\/><\/figure><\/div><\/div>\n<\/div>\n<div class=\"paragraph\" style=\"text-align:left\">\n<em><strong>Read the full project report\u00a0<a href=\"https:\/\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/sfbbo_tvp_cwb_report_2023.pdf\" target=\"_blank\">here<\/a><\/strong><\/em>.\u00a0<span>Thanks to the other Teen Volunteer Program members who helped work on the early stages of this project: Sierra Glassman, Vayun Tiwari, Philip Yang, Sebastien Jeantet, Sahithi Adiraju, and Royce Lee.<\/span>\n<\/div>\n<div>\n\n<hr class=\"styled-hr\" style=\"width:100%\"\/>\n\n<\/div>\n<div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\">\n<em><span style=\"font-weight:700\">Peter Covert<\/span><span>\u00a0is a senior at Palo Alto High School, planning to study Chemical Engineering at Stanford University. He has been passionate about ornithology for much of his life \u2013 he built and has monitored nesting boxes for chickadees and titmice for about five years, has participated in the ornithology event for his school&#8217;s Science Olympiad team, and enjoys spending free mornings hiking and birdwatching. For SFBBO, he has monitored Snowy Plovers and participated in the Teen Volunteer Program.<\/span><\/em>\n<\/p><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"Peter Covert poses outdoors in front of a grassy field and trees.\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/covert-peter_orig.jpg?ssl=1\"\/><\/figure><\/div><\/div>\n<\/div>\n<div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"Lara Tseng holding a bird.\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/img-20220727-092133582-hdr_orig.jpg?ssl=1\"\/><\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\">\n<em><span style=\"font-weight:700\">Lara Tseng<\/span> is a 16-year-old junior who entered Cal State LA through the Early Entrance Program. She is majoring in biology, focusing on ecology, evolution, and the environment and is also minoring in bioinformatics. Lara is also a 2023 Goldwater Scholar. She hopes to obtain a Ph.D. in ornithology and dedicate her career to pursuing avian evolutionary research. Lara has published a <a href=\"https:\/\/emerginginvestigators.org\/articles\/eggshell-consumption-in-different-reproductive-stages-and-broods-of-the-western-bluebird-em-sialia-mexicana-em\" target=\"_blank\">peer-reviewed study<\/a>\u00a0on Western Bluebird calcium consumption. Watch her Birdy Hour talk about the study <a href=\"https:\/\/youtu.be\/FPmms-xFhus\" target=\"_blank\">here<\/a>, and check out her talk on shorebird identification with Jon Dunn <a href=\"https:\/\/youtu.be\/k3YSGT4HOFM\" target=\"_blank\">here<\/a>.<\/em>\n<\/p><\/div><\/div>\n<\/div>\n<div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\">\n<em><span style=\"font-weight:700\">Yunjiao Xiao<\/span><span>\u00a0is a junior at Mission San Jose HS, and she also goes by Grace. She is passionate about STEM and plans to major in mechanical engineering. She has been a long-time pet owner, and her animal buddies over the years have included turtles, a pair of parrots, two rabbits that had eight babies, and currently a tuxedo cat named Joy. Grace\u2019s hobbies include painting, camping, and reading web novels. At SFBBO, she has participated in the Teen Volunteer Program and the <a href=\"\/staging\/1924\/adpp\/\" target=\"_blank\">Avian Disease Prevention Program<\/a><\/span><span>, working with local biologists in field surveys and identifying (and capturing) dead, sick, or injured waterfowl to prevent the spread of diseases.<\/span><\/em>\n<\/p><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" alt=\"Grace Xiao in a tree.\" src=\"https:\/\/i0.wp.com\/sfbbo-test.twomoons.systems\/staging\/1924\/wp-content\/uploads\/weebly-migration\/img-0131_orig.jpeg?ssl=1\"\/><\/figure><\/div><\/div>\n<\/div>\n<div>\n<div align=\"left\" class=\"wcustomhtml\" id=\"923492485166074505\" style=\"width: 100%; overflow-y: hidden\">\n<meta content=\"Teen Volunteers Use Colonial Waterbird Data to Investigate Effects of Flora on Bay Area Birds\" property=\"og:title\"\/>\n<meta content=\"By \u200bTeen Volunteers Peter Covert, Lara Tseng, and Yunjiao (Grace) Xiao\" property=\"og:description\"\/>\n<meta content=\"https:\/\/www.sfbbo.org\/uploads\/1\/1\/6\/7\/116792187\/bay-farm-island-pic-for-acr-ken-phenicie-copy_orig.jpg\" property=\"og:image\"\/>\n<meta content=\"summary_large_image\" name=\"twitter:card\"\/>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Wingbeat is a blog where you can find the most recent stories about our science and outreach work. We&#8217;ll also share guest posts from volunteers, donors, partners, and others in the avian science and&#8230;<\/p>\n","protected":false},"featured_media":1230,"template":"","meta":{"_acf_changed":false,"nf_dc_page":""},"class_list":["post-134","wingbeat","type-wingbeat","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Teen Volunteers Use Colonial Waterbird Data to Investigate Effects of Flora on Bay Area Birds - San Fransisco Bay Bird Observatory<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sfbbo-test.twomoons.systems\/staging\/1924\/wingbeat\/teen-volunteers-use-colonial-waterbird-data\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Teen Volunteers Use Colonial Waterbird Data to Investigate Effects of Flora on Bay Area Birds - San Fransisco Bay Bird Observatory\" \/>\n<meta property=\"og:description\" content=\"Wingbeat is a blog where you can find the most recent stories about our science and outreach work. 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