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<blockquote data-quote="PrairieGhost" data-source="post: 179703" data-attributes="member: 704">A number of different things, but I was acting as a tech at the time and not determining the goals as the lead biologist would.&nbsp; Some of the things I know is we needed to know diet to manage lands.&nbsp; So we shot a bird, dissected to inspect food items.&nbsp; Identified food items.&nbsp; Measured the bill, wing, leg to determine which subspecies used what part of the Platt River for staging.&nbsp; Then chemically digested the birds for lipid content.&nbsp; Birds gained about 1000 grams while staying on the Platt an average of about six weeks.&nbsp; This lipid gain gave them energy to migrate to the nesting grounds.&nbsp; Without weight gain they would reabsorb developing eggs and they were already in reproductive trouble.&nbsp; These studies hopefully helped biologists around Aransas National Wildlife Refuge where they winter, biologists at the International Crane Center on the Platt, and biologists in other staging areas in Canada and on the nesting grounds.&nbsp; Management decisions need data. Collecting was done in different habitats.&nbsp; Harvested corn fields, pasture, alfalfa, hay lands, and native prairie which there was very little.</blockquote>

[QUOTE="PrairieGhost, post: 179703, member: 704"] A number of different things, but I was acting as a tech at the time and not determining the goals as the lead biologist would. Some of the things I know is we needed to know diet to manage lands. So we shot a bird, dissected to inspect food items. Identified food items. Measured the bill, wing, leg to determine which subspecies used what part of the Platt River for staging. Then chemically digested the birds for lipid content. Birds gained about 1000 grams while staying on the Platt an average of about six weeks. This lipid gain gave them energy to migrate to the nesting grounds. Without weight gain they would reabsorb developing eggs and they were already in reproductive trouble. These studies hopefully helped biologists around Aransas National Wildlife Refuge where they winter, biologists at the International Crane Center on the Platt, and biologists in other staging areas in Canada and on the nesting grounds. Management decisions need data. Collecting was done in different habitats. Harvested corn fields, pasture, alfalfa, hay lands, and native prairie which there was very little. [/QUOTE]

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