The globally endangered saker falcon ( Falco cherrug ) is currently being re-introduced in Bulgaria, where the falcons are bred captivity and released through hacking method. We relied on birds’ pedigree when forming breeding pairs from 2011. In 2021-2022, we had opportunity to evaluate our captive population via DNA tests. performed first genetic assessment of sakers WRBC a genome evaluation m...

Studies on cooperative care of offspring in callitrichid primates are biased in favor of observations in captivity. In the wild, however, individuals have to deal with environmental pressures, which may influence their social behavior. We compared the individual effort attributed to parental care offered by members of a wild group (couple, plus a subadult helper) and two captive groups (A: coup...

As amphibian populations continue to decline, both government and non-government organisations are establishing captive assurance colonies to secure populations deemed at risk of extinction if left in the wild. For the most part, little is known about the nutritional ecology, reproductive biology or husbandry needs of the animals placed into captive breeding programs. Because of this lack of kn...

BACKGROUND Although not unusual to find captive relicts of species lost in the wild, rarely are presumed extinct species rediscovered outside of their native range. A recent study detected living descendents of an extinct Galápagos tortoise species (Chelonoidis elephantopus) once endemic to Floreana Island on the neighboring island of Isabela. This finding adds to the growing cryptic diversity ...

Although reports on colony demographics for a variety of callitrichid species are available in the literature, to date there has not been a detailed examination of Wied's black tufted-ear marmoset (Callithrix kuhlii). The purpose of this study is to present colony demographics for C. kuhlii from the University of Nebraska at Omaha's Callitrichid Research Center from 1991 to 2002. C. kuhlii are ...

An increase in dog menace and dog bite by stray dogs in Indian cities and towns could be attributed to genetic changes because of cross breeding with ferocious hunter dogs which are being taken up by humans as captive pet dogs since it has become a craze to keep farm hunting dogs as pets in urban societies, especially in India. Moreover availability of waste food acts as a strong epigenetic fac...

Interest in female ornamentation has burgeoned recently, and evidence suggests that carotenoid-based female coloration may function as a mate-choice signal. However, the possibility that females may signal status with coloration has been all but ignored. Bill coloration of female American goldfinches (Spinus tristis) changes seasonally, from dull gray in winter to bright orange in the breeding ...

The ultimate goal of the Mexican gray wolf Canis lupus baileyi captive management program is reintroduction of healthy individuals into wild habitats. To this end, zoo population managers work to provide not only for the physical well-being but also for the genetic health of these animals. However, the very limited genetic founder base, exacerbated by breeding within three distinct lineages, re...

Captive breeding to safeguard against extirpation in the wild is a practice for many animal groups. Animals captivity experience reduced contact with natural substrates and other animals, consume atypical diets that may alter naturally occurring microbial associations. Amphibian skin microbiomes are vital amphibian health, protecting them from pathogens aiding development, immune system trainin...