I believe this chipmunk is one of the babies. He was happily hoovering up sunflower seeds left on the deck for him when the mangy guy came and he hid then chased the mangy guy but must’ve lost because mangy guy returned.Here he eats and opens the seeds. You can see how he peels back the seed in the second photo. The last photo is cute because you can see how his little hands appear and how he knits them together. Chipmunks always seem worried to me and the way they hold their hands is cute and almost human.
This little guy is a specimen of the Golfo Dulce poison dart frog (Phyllobates vittatus). The species is endemic to the Golfo Dulce region of Costa Rica that includes the Osa Peninsula. While limited to the area, they are relatively common along lowland tropical forest streams along with Green and Black poison dart frogs (Dendrobates auratus). My wife and I got especially lucky when we came across this male because it is exhibiting brood caring behavior typical for this species. It is carrying its tadpoles on its back to deposit them in small pools.
Like other dendrobatid frogs, Phyllobates species are thought to acquire their toxins from dietary sources. One source for batrachotoxin may be melyrid beetles, which have been shown to contain high levels of this toxin. Melyrid beetles may also be the dietary source for batrachotoxin in the toxic New Guinea passerine bird genera Pitohui and Ifrita (Dumbacher et al. 2004).
Finally, I checked on the mallards in our departmental pond (“Botany Pond”) on my way to work. More often than not, a female mallard (Anas platyrhynchos) produces a brood in the pond and then all the young are killed before they fledge. This year, however, all five chicks survived, and they look nearly ready to fledge. I took this photo a few minutes ago. The mother (right) still watches attentively.