Counties
6 results
- Counties · Population trendsFewer winter hens drove Iowa's 17 percent pheasant dropIowa's August routes fell to 22.6 birds while brood sizes held steady, which points at winter hen loss. Compare hens with brood size before you pick a region, and know South Dakota quit its brood count in 2020.
- Counties · Population trendsIn audit simulations a changed buck harvest rate flipped the deer trendWisconsin and Pennsylvania expand the buck kill into a herd figure using harvest rates and sex and fawn ratios. Pennsylvania says its output tracks trend and was never meant as a headcount.
- Counties · Population trendsRemoving one doe group held deer down 5 years in an unhunted herdA 1991 model said removing a doe family could hold deer down for as many as 10 to 15 years. The one field test we found saw 5 years in an unhunted Adirondack herd and work on young hunted herds suggests faster refill.
- Counties · Population trendsNorthern grouse still cycle while Pennsylvania stays 25 percent downMinnesota and Wisconsin drumming still rises and falls about every 10 years. Pennsylvania flush rates since West Nile virus spread statewide in 2002 average 25 percent below the years before it.
- Counties · Population trendsDeer Ages from Teeth: Agreement, Accuracy and Missed YearsSouthern Texas trials with deer of documented age gave adult jawbone estimates 43 to 51% exact-year accuracy. Among 1,292 Iowa bucks, jawbone and cementum estimates matched the yearling-or-adult category roughly 90% of the time.90%match between jawbone and cementum yearling or adult calls, Iowa bucks
- Counties · Population trendsDeer-Vehicle Collisions as a Herd-Abundance SignalAcross thirty-six years, 3,672 observations each describe a single county for a single year. Adjusting crashes to a rate for each billion miles vehicles travel gives a free stand-in for deer abundance.1,759collision density in Schuyler County, the highest