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ACR Heron and Egret Project (HEP) 2018 Season

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ACR Heron and Egret Project (HEP) 2018 Season ACR Heron and Egret Project (HEP) 2018 Season Dear Friends, Here it is once again, our annual call to “get HEP!” To all new and returning volunteers, thank you so much for contributing your time and expertise to the 29th season of ACR’s Heron and Egret Project. Together we continue to expand our rich, decades‐long data set that is put into action each year to increase our understanding of the natural world and promote its conservation. Last year we were pleased to tell you about the new Heron and Egret Telemetry Project. Led by Scott Jennings and David Lumpkin, we had a successful first year—safely tagging three adult Great Egrets. You can follow along as we observe the highly‐detailed log of their movements right here: https://www.egret.org/heron‐egret‐telemetry‐project. Coupled with the detailed reproductive information that you collect at each nesting site, these GPS data will help us improve our understanding of the roles herons and egrets play in the wetland ecosystem and how their habitat needs affect population dynamics. Ultimately, we hope these findings will inform conservation efforts and inspire generations of people to value these beautiful birds and the wetlands that sustain us all. As most of you already know, this is John Kelly’s last year as Director of Conservation Science at Audubon Canyon Ranch. Though it is difficult to imagine life at the Cypress Grove Research Center without John’s intelligent leadership, fierce conservation ethic, and kind support, we are all very grateful for the time he has given this organization and look forward to hearing about his new adventures. Keep your eyes open for a future invitation (coming this summer) to a Cypress Grove Research Volunteer get‐together to celebrate John. And now, let’s get ready for the 2018 monitoring season! The contents of this orientation packet are edited yearly so please review the enclosed materials carefully. All of these items are also available for download from our project website. Martin Griffin Preserve ∙ Bouverie Preserve ∙ Cypress Grove Research Center Modini Mayacamas Preserves 4900 Shoreline Highway One ∙ Stinson Beach, CA 94970 Email: [email protected] ∙ Website: www.egret.org ∙ Phone: 415.868.9244 This document contains the following: 1. 2018 Instructions for Field Observers 2. 2018 Preliminary List of Site Coordinators and Observers 3. Colony site visit forms and Season Summary Form 4. Heron and Egret Courtship Behaviors Fact Sheet 5. Heron and Egret Fact Sheet Don’t forget, we have lots of other project related information for you to peruse on the Heron and Egret Project website, such as popular and scientific press articles, training materials, and fieldwork forms. Find the website here: https://egret.org/north‐bay‐nest‐monitoring. Important Note: The quality of your data is directly related to the number and duration of your site visits. If you cannot observe your site during a regional observation period, please contact us in advance. Finally, always remember: Our first concern is for the birds. Be cautious. Watch for alert postures when you approach a colony and retreat if there is any such suggestion of disturbance. Herons and Egrets are especially sensitive to disturbance early in the season. Our best approach is to treat these beautiful birds with cautious respect. Your first observation period is March 2‐4, so please plan your visit now. If you have any questions please call, email, or text. We are happy to talk about the project with you at any time. We are looking forward to another a great Photo by Len Blumin season! All the best, Emiko Condeso John Kelly Ecologist/GIS Specialist Director of Conservation Science Martin Griffin Preserve ∙ Bouverie Preserve ∙ Cypress Grove Research Center Modini Mayacamas Preserves 4900 Shoreline Highway One ∙ Stinson Beach, CA 94970 Email: [email protected] ∙ Website: www.egret.org ∙ Phone: 415.868.9244 2018 INSTRUCTIONS FOR FIELD OBSERVERS Audubon Canyon Ranch North Bay Heron and Egret Project 2018 REGIONAL OBSERVATION PERIODS DATES RESEARCH OBJECTIVE Draw a panoramic sketch of the nesting trees. Locate and number all active nests on the March 2–4 sketch. (Fri ‐ Sun) Determine the total number of active nests in the colony for each species. Identify and monitor focal nests for each species. Please note this visit is now one of our required observation periods. March 17‐19 Determine the total number of active nests in the colony for each species. (Sat ‐ Mon) Add additional focal nests as soon as they are confirmed to be active. It is important to begin tracking nest survivorship as early as possible. Determine the total number of active nests in the colony for each species. April 6–8 Continue to add focal nests. Focal nests known to be active for less than two weeks can be (Fri ‐ Sun) added until the colony reaches its peak size. Monitor focal nests. May 5–7 Determine the total number of active nests in the colony for each species. (Sat ‐ Mon) Monitor focal nests. June 1–3 Determine the total number of active nests in the colony for each species. (Fri ‐ Sun) Monitor focal nests. This visit may not be necessary if your site only has Great Blue Herons. June 23–25 Determine the total number of active nests in the colony for each species. (Sat ‐ Mon) Monitor focal nests. ADDITIONAL OBSERVATION PERIODS For sites with Snowy Egrets, Cattle Egrets, and Black-crowned Night-Herons Snowy Egrets, Cattle Egrets, and Black-crowned Night-Herons are able to leave the nest platform 10-14 days after hatching. Because of this, weekly visits greatly enhance the accuracy of our estimates of reproductive success. If you are observing a colony with Snowy Egrets, Cattle Egrets, and/or Black-crowned Night-Herons, we encourage you to check in on your focal nests on a weekly basis. Please let us know if this is not possible for you. Site coordinators should contact us immediately if any of these species are new to your site this year. PLEASE PLAN YOUR FIELD TIME: Check the Preliminary List of Site Coordinators and Observers for your colony assignment(s). Let us know as soon as possible if we need to make any changes to your assignment or if you need contact information for your partners. If you are a Site Coordinator, it is your responsibility to inform other field observers about access requirements and to coordinate team or individual observations. The Site Coordinator compiles the data at the end of the season and submits them to the Cypress Grove Research Center. Plan to visit your site once during each of the Regional Observation Periods above. If you cannot observe your site during a scheduled Observation Period, please call Cypress Grove Research Center as soon as possible. Standardized Regional Observation Periods allow us to compare reproductive timing among colonies. These dates provide the minimum four site visits required for this study. However, additional visits will greatly improve the quality of your data. Arrange for the use of a telescope. Telescopes are necessary to obtain adequate data and will greatly add to your pleasure in viewing heron and egret behavior. We encourage you to acquire your own scope; however a few telescopes are available for loan from the Cypress Grove Research Center. Contact us as early as possible to arrange to borrow one. (Continued…) HOW TO SET UP YOUR MONITORING PROGRAM: 1. DETERMINE THE NUMBER OF ACTIVE NESTS EARLY IN THE SEASON. What is an active nest? We define a nest to be “active” when evidence of a pair bond has been observed. Determine this by looking for the following: before April 1st, either two adults present on the same nest platform or one adult carrying nest material or incubating. After April 1st, any occupied nest is “active.” Please note: Black-crowned Night- Herons may engage in nest building before pair bond formation. Therefore, one adult carrying nest material alone does not indicate an active nest. For Black-crowned Night-Herons, please look for at least one of the following: two adults present on the same nest platform, a stick presentation, a nest with eggs or chicks, or a single adult on a well–constructed nest platform (sturdy enough to hold at least two eggs). 2. COMPLETE A NESTING PANORAMA. The nesting panorama is a landscape sketch or photograph that indicates the location of numbered nests you will follow through the season. Additional sketches or photos may be needed if you view numbered nests from different vantage points. Remember to check all sides of nesting trees. Excellent panoramas can be created by making enlarged photocopies of photographs. If you use panoramas from previous years, re-number nests to reflect the current colony. 3. SELECT FOCAL NESTS. Focal nests are used to measure the rate of nest survival by monitoring them repeatedly through the entire season. As early as possible, try to identify a minimum of 15 focal nests per species. A “focal nest” must be observed “active” either before Stage 1, or at Stage 1. New focal nests known to be active for less than two weeks can be added until the colony reaches its peak size. If your colony has 15 or fewer active nests, or if you commit to monitor every nest in the colony, then all nests that meet the above criteria are focal nests. Try to record a complete row of data for each focal nest on every visit, even if you no longer see activity in a nest. If your colony has more than 15 active nests and you cannot monitor every nest on every visit, select a random subset of nests for each species to monitor as focal nests.
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