Overwinter body condition (e.g., fat) provides an index to the health of northern pintail (Anas acuta) populations and may be a factor in the decline of the continental pintail population that has been previously overlooked or understated. We compared body condition between 1984–1985 and 2002–2003, and found that body condition of pintails arriving during early winter in the Playa Lakes Region (PLR) of Texas, USA, has declined by an average of 32%. Body fat levels declined at varying levels with juvenile males showing the largest decline of 41%, followed by adult females with 39%, juvenile females with 30%, and adult males with an overall 18% decline. Declines are likely related to declines in migration and wintering habitat quantity and quality within the PLR and potentially across the Central Flyway. We recommend further acquisition and management of playas to ensure that these valuable habitats remain available to provide critical habitats for migrating and wintering pintails and other waterfowl in the Central Flyway.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 71 • No. 1