Oh, I'm so sorry for those little birdies. I hope against hope they're okay somehow.
You do NOT want to get me started on USPS. I will not ship things with them after they lost a check from a settlement company (who wasn't supposed to mail it in the first place, but still...) from a house sale for $116,000. I had my next settlement to go with the money and had to put that off while they figured out I wasn't conning them.
And THEN, two years ago when I moved from the city to Braddock Mountain I put in a change of address well in advance - because I was also having my hip replacement done...so I wanted it taken care of. Well, it took me (are you sitting down?) FIVE MONTHS and THREE more address changes (in person this time, mind you -the first one was by computer) AND an investigation by their customer service (oh, help me) WHICH I had hooked-and-crooked into their phone system with information from the Web site because you can't GET the customer service people's information from there. I had to visit my OLD house every day to get my mail out of the door (nobody had moved in and my mail sat in between the screen door and the door getting wet in the rain). I was almost arrested at one point on one of my many visits to the Post Office about it. It was INSANE.
I made a point of speaking quietly and calmly getting names of people I talked to who guaranteed my mail would be forwarded (or held, in one case) - which it wasn't - and writing down dates after the first two visits and the supposed manager suddenly goes "Do you want me to call the police and have you taken out of here?" I replied "Well, if they have to count on you to tell them where I am - I'm SAFE - they'll never find me until my MAIL does."